How much power is required to do 40 j of work on an object in 5 seconds?
a. 0 w
b. 5 w
c. 8 w
d. 40 w
e. 200 w

Aparticle initially moving east with a speed of 20.0 m/s, experiences an acceleration of 3.95 m/s, north for a time of 8.00 s. what was the speed of the particle after this acceleration, in units of m/s? give the answer as a positive number.

What is the average speed of a car that travels 40 mph for 1 hour and 60 mph in another hour?

If the spring constant k of a pogo stick is 3500 n m and the weight of the person on the pogo stick is 700 n, how much is the spring in the botom of the pogo stick compressed?