WorksheetsTut.4 (sec. 20)
Total questions: 7
Worksheet time: 4mins
Name
Class
Date
1.
(a) How much work is done by gravity?
a)
168 J
b)
-168 J
c)
-460 J
d)
460 J
2.
(b) How much energy is lost due to friction?
a)
196 J
b)
-196 J
c)
184 J
d)
-184 J
3.
(c) How much work is done by the 100 N force?
a)
500 J
b)
-500 J
c)
0 J
d)
100 J
4.
(f) How much work is done by the Normal force?
a)
168 J
b)
-168 J
c)
0 J
d)
500 J
5.
(d) What is the change in kinetic energy of the crate?
a)
148 J
b)
484 J
c)
516 J
d)
852 J
6.
(e) What is the speed of the crate after being pulled 5.00 m?
a)
5.44 m/s
b)
5.23 m/s
c)
5.64 m/s
d)
0 m/s
7.
Q4. A 15 kg brick moves along an x axis. Its acceleration as a
function of its position is shown in the figure. The scale of
the figure’s vertical axis is set by as= 24.0 m/s2
. What is the
net work performed on the brick by the force causing the
acceleration as the brick moves from x= 0 to x=8.0 m?
a)
1.1 kJ
b)
1.2 kJ
c)
1.3 kJ
d)
1.4 kJ
100 %
