Home
Class 11
PHYSICS
At t = 0, a stone of mass 10 gm is thro...

At t = 0, a stone of mass 10 gm is thrown straight up from the ground level with a speed 10 m/s. After 1 s, a second stone of the same mass is thrown from the same position with a speed 20 m/s. What is the position of the first stone from the ground level at that moment

A

10m

B

1m

C

2m

D

5m

Text Solution

Verified by Experts

The correct Answer is:
D
Position of 1st stone
`h = ut - 1/2 g t^2 = 10 (1) - 1/2 10 (1)^2`
= 5
Promotional Banner

Similar Questions

Explore conceptually related problems

A stone thrown down with a seed u takes a time t_(1) to reach the ground , while another stone, thrown upwards from the same point with the same speed, takes time t_(2) . The maximum height the second stone reaches from the ground is

A stone is thrown upwards with velocity 25m/s. Another stone is simultaneously thrown downward from the same point with speed 10 m/s. When the first stone is at a height 10 m. what is the relative velocity of first stone w.r.t second ?

Two stones are thrown up simultaneously from the edge of a cliff with initial speed v and 2 v . The relative position of the second stone with respect to first varies with time till both the stones strike the ground as.

A stone is thrown vertically up from the ground. It reaches a maximum height of 50 m in 10 sec. After what time it will reach the ground from maximum height position ?

A man standing on the edge of a cliff throws a stone straight up with initial speed (u) and then throws another stone straight down with same initial speed and from the same position. Find the relation of the speeds. The stones would have attained when they hit ground at the base of the cliff.

A balloon is moving along with constant upward acceleration of 1 m//s^2 . A stone is thrown from the balloon downwards with speed 10 m//s with respect to the balloon. At the time of projectile balloon is at height 120 m from the ground and is moving with speed 20 m//s . Find the time required to fall on the ground by the stone after the projection.

A stone of mass 1 kg is thrown with a velocity of 20 m/s across the frozen surface of a take and it comes to rest after travelling a distance of 50 m . What is the magnitude of the force opposing the motion of the stone ?

A person lifts a stone of mass 100 g from the ground to a height of 1.5 m and projects it with a speed 4 m/s . If the process takes 1.5 s then calculate power of the person .

A heavy stone is thrown from a cliff of height h with a speed v. The stone will hit the ground with maximum speed if t is thrown

A stone is dropped form 100 m high cliff. Another stone is thrown upward from ground with a velocity 10m/s. At what time both the stones will meet each other ?