Please help im being timed A baseball is hit at an initial speed of 40 m/s at an angle of 60° above the horizontal. Find the ball’s maximum height in meters. Use g = 9.81 m/s2.
A
10.2

B
20.4

C
22.4

D
61.2

An automobile steering wheel is shown. what is the ideal mechanical advantage? if the ama is 8, what is the efficiency of the steering wheel?

The experiment done in lab is repeated, using a ball that has unknown mass m. you plot your data in the form of f 2 versus m/l, with f in rev/s, m in kg, and l in m. your data falls close to a straight line that has slope 3.19 m/(kg · s2). use g = 9.80 m/s2 and calculate the mass m of the ball.

How does an observation about an object differ from an inference about that object