A boy throws up a ball vertically insided an elevator, with a velocity of 10 m/s relative to the elevator. It takes 1 second for the ball to reach the hand of the boy. The acceleration of the elevator, taking `= 10 m//s^(2)`, is:

A train is moving along a straight line with a constant acceleration 'a' . A boy standing in the train throws a ball forward with a speed of 10 m//s , at an angle of 60_@ to the horizontal. The boy has to move forward by 1.15 m inside the train to catch the ball back at the initial height . the acceleration of the train , in m//s^(2) , is

A boy throws a ball with a velocity of 15 m/s at an angle of 15° with the horizontal. The distance at which the ball strikes the ground is

A boy throws a ball with a velocity of 15 m/s at an angle of 15° with the horizontal. The distance at which the ball strikes the ground is

An elevator without a ceiling is ascending with a constant speed of 10 m//s. A boy on the elevator shoots a ball directly upward, from a height of 2.0 m above the elevator floor. At this time the elevator floor is 28 m above the ground. The initial speed of the ball with respect to the elevator is 20 m//s. (Take g=9.8m//s^2 ) (a) What maximum height above the ground does the ball reach? (b) How long does the ball take to return to the elevator floor?

An elevator without a ceiling is ascending with a constant speed of 10 m//s. A boy on the elevator shoots a ball directly upward, from a height of 2.0 m above the elevator floor. At this time the elevator floor is 28 m above the ground. The initial speed of the ball with respect to the elevator is 20 m//s. (Take g=9.8m//s^2 ) (a) What maximum height above the ground does the ball reach? (b) How long does the ball take to return to the elevator floor?

A train is moving along a straight line with a constant acceleration 'a' . A boy standing in the train throws a ball forward with a speed of 10 m//s , at an angle of 60(@) to the horizontal. The boy has to move forward by 1.15 m inside the train to catch the ball back at the initial height . the acceleration of the train , in m//s^(2) , is

A train is moving along a straight line with a constant acceleration 'a' . A boy standing in the train throws a ball forward with a speed of 10 m//s , at an angle of 60(@) to the horizontal. The boy has to move forward by 1.15 m inside the train to catch the ball back at the initial height . the acceleration of the train , in m//s^(2) , is