Science Questions

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:

A body is thrown vertically upwards with velocity u. The maximum height reached is:

Find the distance covered by a particle in 5 seconds if its velocity is given by v = 2t.

A bus increases its speed from 36 km/h to 72 km/h in 10s. Its acceleration is:

The velocity-time graph of a body is a straight line parallel to the time axis. This means the body has:

A stone is thrown vertically upwards with velocity u. It returns to the ground in time T. The value of T is:

An object covers 1/4th of a circular path of radius r. The magnitude of its displacement is:

If a body covers a distance s in time t such that s = t^3, the acceleration is:

A particle moves along a straight line. After 't' seconds, the distance 's' (in meters) from the starting point is given by s = 8t + 3t^2. Find the velocity at t = 2s.

Two cars A and B are moving with velocities of 20 m/s and 30 m/s in the same direction. What is the relative velocity of B with respect to A?

A ball is thrown upward with a speed of u. It passes a window of height 'h' at a height 'H' from the ground. How much time does it take to cross the window?

A body starting from rest moves with a constant acceleration. What is the ratio of distance covered in the 1st, 2nd, and 3rd seconds?

A stone dropped from the top of a cliff strikes the ground in 4 seconds. How much more time will it take to strike if the cliff was 4 times as high?

The displacement of a particle is given by x = (t - 2)^2. When will the velocity be zero?

A body moves with uniform acceleration 'a' and initial velocity 'u'. The distance traveled by it in the 'nth' second is:

A car accelerates from rest at a constant rate 'α' for some time, after which it decelerates at a constant rate 'β' and comes to rest. If the total time elapsed is 'T', the maximum velocity acquired by the car is:

If a ball is thrown vertically upwards with a velocity of 40 m/s, what is the distance covered in the last second of its upward journey?

A ship A is moving Westwards with a speed of 10 km/h and a ship B 100 km South of A, is moving Northwards with a speed of 10 km/h. The time after which the distance between them becomes shortest is:

A stone is dropped from a balloon rising upwards with a velocity of 12 m/s. If the balloon is at a height of 65m when the stone is dropped, how long will the stone take to reach the ground? (g=10 m/s^2)