Force Quiz - ICSE Class 10 Physics
Free practice quiz: Force (ICSE Class 10 Physics). 51 multiple-choice questions with answers and explanations. Play online, no sign-up needed.
This ICSE Class 10 Physics practice quiz has 51 multiple-choice questions on Force, and 51 of them come with an explanation. Try the 5 sample questions below (tap an option to check yourself), then play the full quiz online. No sign-up needed.
Start quiz: 51 questions, freeSample questions
A body of mass 10 kg is moving with a uniform velocity of 5 m/s on a frictionless horizontal surface. If a force of 50 N is applied in the opposite direction of motion, what will be the acceleration of the body?
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Answer: B. -5 m/s²
Initially, the body is moving with a uniform velocity, meaning its acceleration is zero. When a force is applied in the opposite direction of motion, it will cause deceleration. Using Newton's second law, F = ma, where F = -50 N (since it's opposite to motion) and m = 10 kg, we get a = F/m = -50 N / 10 kg = -5 m/s².
A ball of mass 0.5 kg is dropped from a height of 10 m. Ignoring air resistance, what is the velocity of the ball just before it hits the ground? (g = 10 m/s²)
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Answer: B. 14.14 m/s
We can use the kinematic equation v² = u² + 2as, where u is the initial velocity (0 m/s since it's dropped), a is the acceleration due to gravity (g = 10 m/s²), and s is the distance (height = 10 m). So, v² = 0² + 2 * 10 m/s² * 10 m = 200 m²/s². Therefore, v = sqrt(200) ≈ 14.14 m/s.
If the mass of an object is doubled and the acceleration remains the same, the applied force will be:
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Answer: B. Doubled
According to Newton's second law (F = ma), if mass (m) is doubled and acceleration (a) remains constant, then the force (F) must also be doubled to maintain the equality.
A car accelerates from rest at 2 m/s² for 5 seconds. What is the final velocity of the car?
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Answer: C. 10 m/s
Using the kinematic equation v = u + at, where u (initial velocity) = 0 m/s (since it starts from rest), a = 2 m/s², and t = 5 s. Therefore, v = 0 + (2 m/s²)(5 s) = 10 m/s.
A shot-putter throws a shot. What provides the force to accelerate the shot?
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Answer: C. The force exerted by the shot-putter's muscles.
The shot-putter applies a muscular force to the shot, causing it to accelerate. Gravity and air resistance are also acting on the shot, but the primary force responsible for its acceleration is the force from the thrower.
More questions in this quiz
Answers and explanations are in the full quiz.
- Two forces, 5 N and 12 N, are acting on a body. The angle between them is 90°. What is the magnitude of the resultant force?
- A body is pushed with a force of 10 N, causing it to accelerate at 2 m/s². If a force of 20 N is applied to the same body, what will be its acceleration, assuming no change in mass?
- What is the unit of impulse in SI units?
- A block is at rest on a horizontal surface. Which of the following forces is NOT present when a force is applied to it, but it does not move?
- The coefficient of kinetic friction is generally ________ the coefficient of static friction.
- A cannonball of mass 5 kg is fired from a cannon of mass 500 kg. If the cannonball leaves the cannon with a velocity of 100 m/s, what is the recoil velocity of the cannon?
- Which of the following represents a non-contact force?
- A force of 20 N is applied to a lever. If the lever arm is 0.5 m, what is the torque produced?
- A body of mass 2 kg is moving with a velocity of 4 m/s. If a force is applied for 2 seconds, and the velocity becomes 8 m/s, what is the magnitude of the force?
- A body is at rest. If a net force is applied to it, what happens to its state of motion?
- Which of the following is a scalar quantity?
- When a person jumps from a height and lands on a concrete floor, they are more likely to be injured than if they jump onto a sandpit. This is because:
- Two objects of masses m1 and m2 are moving towards each other with velocities v1 and v2 respectively. If they undergo a perfectly elastic collision, what is conserved?
- A body is acted upon by two forces of equal magnitude but opposite directions. What is the net force acting on the body?
- Which of the following quantities is directly proportional to the force applied to a spring according to Hooke's Law?
- A force of 50 N is applied to an object of mass 10 kg. If the object is initially at rest, what is its acceleration? (Assume the force is the only force acting on the object)
- What is the SI unit of momentum?
- A block is placed on a rough horizontal surface. A horizontal force is applied to it. Which force opposes the motion if the block starts to slide?
- A body is moving in a circle at a constant speed. Which of the following is true about the net force acting on it?
- What is the magnitude of the force acting on a 100 kg object that accelerates at 2 m/s²?
- A rocket expels gases downwards at a high velocity. What principle is demonstrated by this action?
- A force F is applied to an object of mass m, causing it to accelerate at 'a'. If the same force F is applied to an object of mass 2m, what will be its acceleration?
- When a body falls freely under gravity, its acceleration is constant and independent of its mass. This statement is an illustration of:
- What is the condition for translational equilibrium of a body?
- A hammer strikes a nail. The force exerted by the hammer on the nail is equal and opposite to the force exerted by the nail on the hammer. This statement is an example of:
- If the angle between two forces is decreased, how does the magnitude of their resultant force change, assuming the magnitudes of the forces remain constant?
- What is the unit of power in the SI system?
- If a force is applied perpendicular to the direction of motion of an object, what happens to the object's speed?
- What is the unit of force in the SI system?
- A spring has a spring constant of 200 N/m. If it is stretched by 0.1 m, what is the magnitude of the force required?
- If the time of impact is increased, while keeping the change in momentum constant, what happens to the average force during the impact?
- A block of mass 5 kg is resting on a frictionless horizontal table. If a horizontal force of 20 N is applied, what is the acceleration of the block?
- Which of the following is an example of a centripetal force?
- If the mass of an object is doubled and the force applied remains the same, its acceleration will:
- A body is pushed with a force. If the force is removed, and the body continues to move with a constant velocity, what can be said about the net force acting on the body?
- Which of the following forces is a conservative force?
- If the distance between two masses is doubled, the gravitational force between them becomes:
- A tug-of-war is won by one team because they exert a greater force on the rope. What is the force that allows them to win?
- Which law states that the rate of change of momentum of a body is proportional to the applied unbalanced force and occurs in the direction of the force?
- When you push a wall, the wall pushes back on you with an equal and opposite force. This is an example of:
- A block of mass 'm' is pulled by a force 'F' at an angle 'θ' with the horizontal. The component of the force responsible for lifting the block is:
- Which of the following is a consequence of inertia?
- A uniform electric field exerts a force on a charged particle. If the charge of the particle is doubled, what happens to the force?
- When a force is applied to a rigid body, it can cause:
- A body is subjected to a constant force. What is true about its motion?
- The coefficient of static friction between two surfaces is 0.5. What is the minimum horizontal force required to start moving a 10 kg block on a horizontal surface?
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