Acceleration WS 6: Free Fall For each problem, list your known values, unknown variables, and what tools you can use to solve the problem.
1. A tennis ball is dropped from the sky, taking 5.0 s to reach the Earth. Draw a diagram of the scenario, labeling known values.
2. How high was it dropped from?
Knowns
Unknown(s)
Tools)
Solution
3. How fast was it going just before it hit the ground?
Knowns
Unknown(s)
Tools)
Solution

The man fires an 80 g arrow so that it is moving at 80 m/s when it hits and embeds in a 8.0 kg block resting on ice. how far will the block slide on the ice before stopping? a 7.1 n friction force opposes its motion.

What type of electromagnetic wave is used in security pens? a. x-rays c. microwaves b. visible light d. ultraviolet radiation select the best answer from the choices provided

Suppose that two tanks, 1 and 2, each with a large opening at the top, contain different liquids. a small hole is made in the side of each tank at the same depth 1.57 m below the liquid surface, but the hole in tank 2 has 2.49 times the cross-sectional area of the hole in tank 1. (a) what is the ratio ρ1/ρ2 of the densities of the liquids if the mass flow rate is the same for the two holes? (b) what is the ratio rv1/rv2 of the volume flow rates from the two tanks? (c) at one instant, the liquid in tank 1 is 14.9 cm above the hole. if the tanks are to have equal volume flow rates, what height above the hole must the liquid in tank 2 be just then?