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Physics help?
Someone in a car going past you at the
speed of 28 m/s drops a small rock from a
height of 1.9 m.
How far from the point of the drop will the
rock hit the ground? The acceleration due to
gravity is 9.8 m/s^2.
A ball is thrown horizontally from the top of
a building 25.5 m high. The ball strikes the
ground at a point 111 m from the base of the
building.
The acceleration of gravity is 9.8 m/s^2.
Find the time the ball is in motion.
Find the initial velocity of the ball.
1 Answer
- ?Lv 47 years ago
Both times for the rock to hit the ground can be figured the same. Assume to initial vertical velocity so the time is figured by setting the vertical distance traveled equal to one half the acceleration of gravity times the square of the time. Then assuming the horizontal velocity doesn't change knowing the distance traveled and the time the initial velocity can be determined.
