2007-10-21 12:49:45 · 4 answers · asked by Anonymous in Science & Mathematics ➔ Physics
When rolling uphill it loses speed due to friction.
2007-10-21 12:57:12 · answer #1 · answered by Anonymous · 0⤊ 0⤋
When rolling up, it looses speed because of gravity, and to a lesser extent, because of friction.
Consider if the ball were dropped. It gains speed, that is, it accelerates because of gravity at about 9.81 m/s^2 (ignoring air resistance). But if it is thrown vertically upwards, it slows down. That is because gravity is now acting AGAINST the motion of the ball. It therefore has a NEGATIVE acceleration of 9.81 m/s^2. That is a deceleration.
In the case of the inclined plane, only part of g acts on the ball in both situations.
2007-10-21 20:06:45 · answer #2 · answered by flandargo 5 · 0⤊ 0⤋
yes
2007-10-21 19:53:18 · answer #3 · answered by Aleisha N 1 · 0⤊ 0⤋
...cause of inertia.
2007-10-21 19:57:05 · answer #4 · answered by Anonymous · 0⤊ 0⤋