What is the gravitational potential energy of a 63.5kg skateboarder at the top of a 0.61m high ramp

When waves strike an object and bounce off, what has occured

What is a non deadly thing

Which name is given to the type of friction that an objects falling through the air experience

A siren mounted on the roof of a firehouse emits sound at a frequency of 900 Hz. A steady wind is blowing with a speed of 15.0 m/s.

In the absence of an external force, a moving object will ... a) stop immediately. b) slow down and eventually come to a stop. c) gradually speed up until it reaches its terminal velocity. d) move with constant velocity in a straight line.

Why is a ehephent so big is it just big or are we so small?

Which of the following traits might be considered an adaptation fora rabbit living in the Arctic?

What is Newtons 2nd law of motion?

A truck is using a hook to tow a car whose mass is one quarter that of the truck. If the force exerted by the truck on the car is 6000 N, then the force exerted by the car on the truck isa. 1500 Nb, 24000 Nc, 6000 Nd, 12000 N

A car traveling at a speed of v can brake to an emergency stop in a distance x. assuming all other driving conditions are all similar, if the traveling speed of the car doubles, the stopping distance will be