CSS - PMS - CCE - PCS - Everyday Science
Mechanics
If 500 J of work is done in 4 s, average power is:
A. 127 W
B. 125 W
C. 124 W
D. 126 W
Correct Answer: B
P = W/t.
CSS - PMS - CCE - PCS - Everyday Science
Mechanics
If 500 J of work is done in 2 s, average power is:
A. 250 W
B. 249 W
C. 252 W
D. 251 W
Correct Answer: A
P = W/t.
CSS - PMS - CCE - PCS - Everyday Science
Mechanics
If 300 J of work is done in 10 s, average power is:
A. 31 W
B. 30 W
C. 32 W
D. 29 W
Correct Answer: B
P = W/t.
CSS - PMS - CCE - PCS - Everyday Science
Mechanics
If 300 J of work is done in 5 s, average power is:
A. 59 W
B. 62 W
C. 61 W
D. 60 W
Correct Answer: D
P = W/t.
CSS - PMS - CCE - PCS - Everyday Science
Mechanics
If 300 J of work is done in 4 s, average power is:
A. 75 W
B. 74 W
C. 77 W
D. 76 W
Correct Answer: A
P = W/t.
CSS - PMS - CCE - PCS - Everyday Science
Mechanics
If 300 J of work is done in 2 s, average power is:
A. 150 W
B. 152 W
C. 149 W
D. 151 W
Correct Answer: A
P = W/t.
CSS - PMS - CCE - PCS - Everyday Science
Mechanics
If 200 J of work is done in 10 s, average power is:
A. 20 W
B. 22 W
C. 21 W
D. 19 W
Correct Answer: A
P = W/t.
CSS - PMS - CCE - PCS - Everyday Science
Mechanics
If 200 J of work is done in 5 s, average power is:
A. 40 W
B. 42 W
C. 39 W
D. 41 W
Correct Answer: A
P = W/t.
CSS - PMS - CCE - PCS - Everyday Science
Mechanics
If 200 J of work is done in 4 s, average power is:
A. 51 W
B. 50 W
C. 49 W
D. 52 W
Correct Answer: B
P = W/t.
CSS - PMS - CCE - PCS - Everyday Science
Mechanics
If 200 J of work is done in 2 s, average power is:
A. 100 W
B. 99 W
C. 101 W
D. 102 W
Correct Answer: A
P = W/t.
CSS - PMS - CCE - PCS - Everyday Science
Mechanics
If 100 J of work is done in 10 s, average power is:
A. 11 W
B. 12 W
C. 10 W
D. 9 W
Correct Answer: C
P = W/t.
CSS - PMS - CCE - PCS - Everyday Science
Mechanics
If 100 J of work is done in 5 s, average power is:
A. 20 W
B. 21 W
C. 19 W
D. 22 W
Correct Answer: A
P = W/t.
CSS - PMS - CCE - PCS - Everyday Science
Mechanics
If 100 J of work is done in 4 s, average power is:
A. 24 W
B. 26 W
C. 27 W
D. 25 W
Correct Answer: D
P = W/t.
CSS - PMS - CCE - PCS - Everyday Science
Mechanics
If 100 J of work is done in 2 s, average power is:
A. 52 W
B. 51 W
C. 50 W
D. 49 W
Correct Answer: C
P = W/t.
CSS - PMS - CCE - PCS - Everyday Science
Mechanics
A force of 50 N moves an object 10 m in its direction. Work done is:
A. 499 J
B. 501 J
C. 502 J
D. 500 J
Correct Answer: D
W = Fd.
CSS - PMS - CCE - PCS - Everyday Science
Mechanics
A force of 50 N moves an object 5 m in its direction. Work done is:
A. 250 J
B. 251 J
C. 252 J
D. 249 J
Correct Answer: A
W = Fd.
CSS - PMS - CCE - PCS - Everyday Science
Mechanics
A force of 50 N moves an object 4 m in its direction. Work done is:
A. 202 J
B. 200 J
C. 199 J
D. 201 J
Correct Answer: B
W = Fd.
CSS - PMS - CCE - PCS - Everyday Science
Mechanics
A force of 50 N moves an object 3 m in its direction. Work done is:
A. 151 J
B. 149 J
C. 150 J
D. 152 J
Correct Answer: C
W = Fd.
CSS - PMS - CCE - PCS - Everyday Science
Mechanics
A force of 50 N moves an object 2 m in its direction. Work done is:
A. 101 J
B. 99 J
C. 102 J
D. 100 J
Correct Answer: D
W = Fd.
CSS - PMS - CCE - PCS - Everyday Science
Mechanics
A force of 40 N moves an object 10 m in its direction. Work done is:
A. 400 J
B. 399 J
C. 401 J
D. 402 J
Correct Answer: A
W = Fd.