HELP ME PLSS A tennis ball is thrown vertically upward
with an initial velocity of +7.5 m/s.
What will the ball's velocity be when it
returns to its starting point? The acceleration
of gravity is 9.81 m/s?.
Answer in units of m/s.
2
part 2 of 2
How long will the ball take to reach its
starting point?
Answer in units of s.

If an inclined plane is 5 m long and 2 m high, what is its mechanical advantage? a. 2.5 b. 3 c. 7 d. 10

Aforklift raises a 1,020 n crate 3.50 m up to a shelf. how much work is done by the forklift on the crate? the forklift does j of work on the crate.

(a) assume the equation x = at^3 + bt describes the motion of a particular object, with x having the dimension of length and t having the dimension of time. determine the dimensions of the constants a and b. (use the following as necessary: l and t, where l is the unit of length and t is the unit of time.) (b) determine the dimensions of the derivative dx/dt = 3at^2 + b. (use the following as necessary: l and t, where l is the unit of length and t is the unit of time.)