Physics

Which of the following is true for a freely falling body?

A ball is thrown upwards with a velocity of 20 m/s. What is the maximum height reached? (g=10 m/s^2)

If a car travels 100km at 40km/h and the next 100km at 60km/h, the average speed is:

A body is moving with a uniform velocity of 10 m/s. Its acceleration after 10 seconds is:

The ratio of displacement to distance for a moving object is:

A motorboat starting from rest on a lake accelerates in a straight line at a constant rate of 3.0 m/s^2 for 8.0 s. How far does the boat travel during this time?

If the displacement-time graph is a curve bending towards the displacement axis, the body has:

A cheetah can accelerate from rest to 25 m/s in 2 seconds. Its acceleration is:

A stone is thrown vertically upward with a speed of 49 m/s. How much time does it take to reach maximum height? (g=9.8 m/s^2)

A car decreases its speed from 80 km/h to 60 km/h in 5 seconds. What is the retardation?

Calculate the distance covered by a car in 10s if it starts from rest and moves with acceleration 2 m/s^2.

Which of these graphs represents uniform motion?

A ball is dropped from a tower of height h. It takes T seconds to reach the ground. Where is the ball at time T/2?

If a body covers 20m in 2nd second and 30m in 3rd second of its motion, what is its acceleration?

A racing car has a uniform acceleration of 4 m/s^2. What distance will it cover in 10s after start?

The velocity of an object at the end of 5s is 25 m/s. If it started from rest, what is its acceleration?

What is the speed of a car that travels 400m in 20s?

A body moves from A to B with 40 km/h and returns with 60 km/h. The average velocity is:

A car travels 30 km at a uniform speed of 40 km/h and the next 30 km at a uniform speed of 20 km/h. Find its average speed.

For a body starting from rest and moving with uniform acceleration, the distance traveled is proportional to: