NEET Physics MCQs - Mechanics: Motion, Forces, Work and Energy (Set 1)

Q1. A car moving at 20 m/s brakes with a uniform deceleration of 5 m/s². What distance does it cover before stopping?

a) 80 m

b) 20 m

c) 40 m

d) 100 m

Q2. A stone is dropped from rest from a height of 80 m. How long does it take to reach the ground? (g = 10 m/s²)

a) 8 s

b) 16 s

c) 2 s

d) 4 s

Q3. A car covers the first half of a distance at 30 km/h and the second half at 60 km/h. What is its average speed for the whole trip?

a) 40 km/h

b) 50 km/h

c) 45 km/h

d) 35 km/h

Q4. The position of a particle is x = 3t² − 2t + 1, with x in metres and t in seconds. What is its velocity at t = 2 s?

a) 10 m/s

b) 6 m/s

c) 12 m/s

d) 9 m/s

Q5. A ball is projected at 20 m/s at an angle of 30° above the horizontal. What is its time of flight on level ground? (g = 10 m/s²)

a) 1 s

b) 2√3 s

c) 4 s

d) 2 s

Q6. Blocks of 3 kg and 2 kg are in contact on a frictionless floor. A horizontal force of 10 N pushes the 3 kg block, which pushes the 2 kg block. What is the contact force between them?

a) 10 N

b) 6 N

c) 4 N

d) 2 N

Q7. A 5 kg block on a rough horizontal floor (coefficient of kinetic friction 0.2) is pulled by a horizontal force of 20 N. What is its acceleration? (g = 10 m/s²)

a) 1 m/s²

b) 2 m/s²

c) 4 m/s²

d) 3 m/s²

Q8. A block placed on an inclined plane just begins to slide when the angle of the incline reaches 30°. What is the coefficient of static friction?

a) 1/√3

b) 1/2

c) √3

d) √3/2

Q9. What is the maximum speed at which a car can take an unbanked circular turn of radius 40 m if the coefficient of friction between tyres and road is 0.4? (g = 10 m/s²)

a) 8 m/s

b) 16 m/s

c) 4√10 m/s

d) 40 m/s

Q10. A variable force F = 3x² N acts on a body along the x-axis. How much work does it do as the body moves from x = 0 to x = 2 m?

a) 6 J

b) 12 J

c) 24 J

d) 8 J

Q11. A car moves at a constant speed of 20 m/s against a total resistive force of 500 N. What power does the engine deliver?

a) 5 kW

b) 10 kW

c) 1 kW

d) 25 kW

Q12. A 5 kg gun fires a 10 g bullet with a muzzle speed of 500 m/s. What is the recoil speed of the gun?

a) 2 m/s

b) 1 m/s

c) 10 m/s

d) 0.5 m/s

Q13. A ball moving at speed v makes a head-on, perfectly elastic collision with an identical ball at rest. What are their velocities after the collision?

a) The first stops and the second moves at v

b) Both move at v/2

c) The first moves back at v and the second stays at rest

d) Both stop

Q14. A simple pendulum of length 0.8 m is released from rest with the string horizontal. What is the speed of the bob at the lowest point? (g = 10 m/s²)

a) 16 m/s

b) 8 m/s

c) 2 m/s

d) 4 m/s

Q15. A planet has twice the mass and twice the radius of the Earth. A person weighs 600 N on the Earth. What does the person weigh on this planet?

a) 150 N

b) 300 N

c) 1200 N

d) 600 N