The graph shows the force on a 3.5kg shot-put
as it is thrown. What is the speed of the shot-put
after it is thrown?
A 50 gram arrow has an initially velocity of 60m/s before it
passes through an apple. The arrow takes .02 seconds
to pass through the apple and emerges with a velocity of
45m/s. What average force did the apple apply to arrow?
A 2kg block has a speed of 6m/s at the
instant it collides with a 3kg block that is
initially at rest. The two blocks stick together
and slide 70cm before coming to rest. What
is the coefficient of friction between the
blocks and the surface?
2kg
6m/s
3kg
2kg
3kg
70cm
A 20 gram bullet collides and embeds in a 500 gram
block. The block/bullet combination flies off a table
as shown in the diagram. What is the initial velocity
of the bullet?
v=?
500g
4m
6m