A skateboard is pushed down a ramp at a local skate park with a velocity of 4.0 m/s. It lands 2m away from the ramp. How high is the ramp? How long was the skateboard in the air?

Which features on mars point to the possibility of liquid water on the planet? impact craters with sharp rims volcanic cones with craters gullies and stream-like channels mountain ranges with faults

Apositive charge moves in the direction of an electric field. which of the following statements are true? check all that apply. check all that apply. 1.the potential energy associated with the charge decreases. 2. the electric field does positive work on the charge. 3. the electric field does negative work on the charge. 4. the potential energy associated with the charge increases. 5. the electric field does not do any work on the charge. 6. the amount of work done on the charge cannot be determined without additional information.

Describe cytokinesis in plants and animals. in animals: in plants.