QUIZ 2 “Nota” means none of
the above
(a) 0 N
(b) 1 N (c)
2 N (d) nota
(a) 98 N (b) 24. 5 N (c) 0.98 N (d) nota
(a) 0
N (b) 20 N (c) 10 N
(d) nota
4. What is the acceleration of a 40 –kg block of
cement pulled sideways with a force of 800 N?
(a)
2 m/s2 (b) 20 m/s2 (c) 200 m/s2 (d) nota
5.
What is the acceleration of a skydiver when the air resistance force builds up
to one-fourth her weight?
(a) g/4
(b) g/2 (c) 3g/4 (d) nota
6.
A baseball bat hits a ball with a force of 1000 N. The force of the ball
on the bat is
(a) less than 1000 N (b) more
than 1000 N (c) equal to 1000 N (d) nota
7. The Earth pulls down on an apple with a
force of 10 N.
The force of the apple
on the Earth
is
(a) less than 10 N (b) more
than 10 N (c) equal to 10 N (d) nota
8. If you stand next to a wall on a frictionless
skateboard and push the wall with a force of 60 N, how hard does the wall push
on you?
(a) 60 N
(b) 0 N (c) 120 N
(d) nota
9.
In the previous problem, if your mass is 60 kg, what is your
acceleration ?
(a) 0 m/s2. (b) 1 m/s2 (c) 2 m/s2 (d) nota
10. Forces of 3 N and 4 N act at right angles on
a block . What is the magnitude of the net force F?
(a) 7 N (b) 12 N (c) 5 N (d) nota