4. A tennis ball is at rest when it experiences a forward force to set it in motion. It then strikes a wall
where it encounters a force that shows it down and finally turns it around and sends it backwards.
I-
I-
I=
Ap=
Ap=
Ap=
Fall =
N
I wall = 120 N
Moving
t=0.1
Moving
t=0.05 s
t=0.045
V=Om's
Left
Stopped
Right
Fapp = 60 N
P1 =
P2=
P4
P3

Molten iron fills a mould, which has a volume of 200 cm cubed. calculate the volume when the iron cools and solidifies.

The slope of a velocity time graph over any interval of time gives the during that interval

If a rock is thrown upward on the planet mars with a velocity of 12 m/s, its height (in meters) after t seconds is given by h = 12t − 1.86t2. (a) find the velocity of the rock after two seconds. m/s (b) find the velocity of the rock when t = a. 12−3.72a m/s (c) when will the rock hit the surface? (round your answer to one decimal place.) t = s (d) with what velocity will the rock hit the surface? m/s