MyQuestionIcon

1

You visited us 1 times! Enjoying our articles? Unlock Full Access!

1st Equation of Motion

a ball falls ...

Question

a ball falls freely from a height of 45m.When the ball is at a height of 25m,it explodes into 2 equal parts.One of them moves horizontally with a speed of 10m/s.The dis†an ce b/w 2 pieces on the ground is a) 10 m b)20m c) 30m d)40

Open in App

Solution

Suggest Corrections

thumbs-up

3

Similar questions

Q. A ball is projected from the ground with a speed of

20 m / s

at an angle of 45 with horizontal. There is a wall of

25 m

height at a distance of

10 m

from the projection point. The ball will hit the wall at a height of

Q. A metal ball of mass

2 k g

is allowed to fall freely from rest from a height of

5 m

above the ground (Take

g = 10 m s^{- 2}

). Calculate the potential energy possessed by the ball when initially at rest.

Q. A ball falls from a height of 10 m. On rebounding, it loses 30% energy. The ball goes upto a height of

Q. A cracker is thrown into air with a velocity of 10 m/s at an angle of 45

^{o}

with the vertical. When it is at a height of 0.5 m from the ground, it explodes into a number of pieces which follow different parabolic paths. What is the velocity of centre of mass, when it is at a height of 1 m from the ground?

(g = 10 m / s^{2})

Q. A bomb of mass

12 kg

is dropped by a fighter plane moving horizontally with a speed of

100 {ms}^{- 1}

from a height of

1 km

from the ground. The bomb exploded after

10 s

into two pieces of masses in the ratio

1 : 5

. If the small part started moving horizontally with a speed of

600 {ms}^{- 1},

the speed of bigger part will be

(g = 10 {ms}^{- 2})

View More

Join BYJU'S Learning Program

similar_icon

Related Videos

lock

Motion Under Constant Acceleration

PHYSICS

Watch in App

explore_more_icon

Explore more

1st Equation of Motion

Standard XII Physics

Join BYJU'S Learning Program

CrossIcon