A pumpkin shot at an
angle of 60o above the horizontal strikes a building 2.38 seconds
later, 80 ft away at a point 48 ft above the point of projection. (keep units
as they are, g = 32ft/s2)
(a) Find the initial
velocity vi = 67.3 ft/sec.
(b) Find the magnitude
& direction of the velocity when it strikes the building.
38.1 ft/s, 28 o
Draw a free-body diagram for a ball resting on a table. Be sure to label all forces.
Draw a free-body diagram for a ball rolling down a
hill. Label all forces.
1.
Draw the free body diagram for a ball
that’s dropped (while it’s in the air).
2.
Draw the free body diagram for a box
pulled on a table at a constant speed.
3.
A 60 kg man
pushes a 15 kg box across a floor using a force of 60 N.
1.
What is the mass
of the box?
2.
What is the force
of gravity on the box?
3.
Draw a free-body
diagram of the box.
4.
What is the
magnitude of the normal force on the box?
5.
How hard does the
box push on the ground?
6.
How hard does the
box push on the man?
