Determine the change in velocity of a car that starts at rest and has a final velocity of 20 m/s north

When you jump from an elevated position you usually bend your knees upon reaching the ground. by doing this, you make the time of the impact about 10 times as great as for a stiff-legged landing. in this way the average force your body experiences is a) less than 1/10 as great. b) more than 1/10 as great. c) about 1/10 as great.d) about 10 times as great.

Amira pulls a 3 pound wagon 4 feet. how much work has she done?

What are the similarities & differences between a thermistor and a light dependent resistor in physics?