When starting to slide down a waterslide, why would a person push on the sides of the slide?
A. Pushing on the slide does not do anything for the person.
B.
The person is using the slide to make himself move.
C.
The person wants the slide to move.
D. The person is trying not to get wet.

When you drop a pebble from height a it reaches the ground with speed v if there is no air resistance. from what height should you drop it so it will reach the ground with three times the speed? (a) 9m (b) 3m (c) 6m (d) 18m

Acar travels in reverse. it covers 150 meters in 12 seconds what is the velocity of the car what is the speed of the car

It may seem strange that the selected velocity does not depend on either the mass or the charge of the particle. (for example, would the velocity of a neutral particle be selected by passage through this device? ) the explanation of this is that the mass and the charge control the resolution of the device--particles with the wrong velocity will be accelerated away from the straight line and will not pass through the exit slit. if the acceleration depends strongly on the velocity, then particles with just slightly wrong velocities will feel a substantial transverse acceleration and will not exit the selector. because the acc