A Motorcycle is running at speed of 54km/hr . what should be uniform acclaration in m 5*2 so that the motorcycle covers a distance of 1 km in 20 seconds ​

When an object is heated it contracts. a. true b. false

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.

What is friction? how does it affect the motion of an object?