A ball is thrown straight up from the ground with an unknown velocity. It returns to the ground after 4.0seconds. With what velocity did it leave the ground?

What is 1550 dm expressed in hectometers? a. 1550000 hm b. 155.0 hm c. 15.50 hm d. 1.55 hm

How do you distinguish between speed, velocity, and acceleration?

A tow truck is pulling a car out of a ditch by means of a steel cable (y = 2.0 x 1011 n/m2) that is 9.55 m long and has a radius of 0.437 cm. when the car just begins to move, the tension in the cable is 803 n. how much has the cable stretched?

A mass of 2.50 kg is in a gravitational field of 14.0 N/kg. What force acts on the mass?

Part A: A 21.0-kg child is sliding down a 10.0 m long slide that is angled 25.0° above the horizontal. What is the gravitational potential energy of the child-Earth system when the child is at the top of the slide (10.

Why does the closed top of a convertible bulge when the car is riding along a highway? Why does the closed top of a convertible bulge when the car is riding along a highway? The air pressure is greater outside the car than inside.

Is a white shirt cooler or warmer in the sunlight?

A stone is thrown vertically upward with a speed of 18.0. (a) How fast is it moving when it reaches a height of 11.0? (b) How long is required to reach this height? For part A) I did: y=11m, g=9.

What object or class of objects makes up most of the solar systemâs mass?

Carole is very tired and makes coffee. why would newton say that she must use her hand to put up the cup