Chapter 2:
Motion and Speed
Practice Test
1.
At a cross country meet, a runner starts the race at a speed of 11 m/s. In the last stretch, she increases her speed to 14 m/s. What is her change in speed?
a.
-3 m/s
b.
25 m/s
c.
-25 m/s
d.
3 m/s
Hint
2.
A bus leaves at 9 a.m. with a group of tourists. They travel 350 km before they stop for lunch. Then they travel an additional 250 km until the end of their trip at 3 p.m. What was the average speed of the bus?
a.
250 km/h
b.
350 km/h
c.
600 km/h
d.
100 km/h
Hint
3.
You are running at a speed of 10 km/h and hit a patch of mud. Two seconds later your speed is 8 km/h. What is your acceleration in units of m/s
2
?
a.
-0.3 m/s
2
b.
1.0 m/s
2
c.
-1.0 m/s
2
d.
3.6 m/s
2
Hint
4.
John rides his bike 2.3 km to school. After school, he rides an additional 1.4 km in the opposite direction to the mall. What is his total distance traveled?
a.
3.7 km
b.
3.1 km
c.
0 km
d.
0.9 km
Hint
5.
A squirrel runs 4.8 m across a lawn, stops, then runs 2.3 m back in the opposite direction. What is the squirrel's displacement from its starting point?
a.
7.1 m
b.
4.8 m
c.
2.5 m
d.
2.3 m
Hint
6.
An ant travels 75 cm in 5 s. What was the ant's speed?
a.
75 cm/s
b.
15 cm/s
c.
3 cm/s
2
d.
375 cm/s
Hint
7.
It takes a car one minute to go from rest to 30 m/s. What is the acceleration of this car?
a.
0.03 m/s
2
b.
30 m/s
2
c.
0.5 m/s
2
d.
2 m/s
2
Hint
8.
You are in a car traveling an average speed of 60 km/h. The total trip is 240 km. How long does the trip take?
a.
4 h
b.
2 h
c.
14,400 h
d.
14.4 h
Hint
9.
During a tug-of-war, Team A is applying a force of 5000 N while Team B is applying a force of 8000 N. What is the net force applied to the rope?
a.
13,000 N towards Team A
b.
3000 N towards Team A
c.
13,000 N towards Team B
d.
3000 N towards Team B
Hint
10.
A weight lifter is trying to lift a 1500 N weight but can apply a force of only 1200 N on the weight. One of his friends helps him lift it all the way. What force was applied to the weight by the weight lifter's friend?
a.
2700 N
b.
1500 N
c.
1200 N
d.
300 N
Hint
