PHYS 261 FINAL PRACTICE SET 2026
TESTED QUESTIONS AND CORRECT
SOLUTIONS
◉ 6.94 x 10^3 mm- 4.5 x 10^2 mm Answer: 6.5 x 10^3 mm
◉ 3.981 g + 5.05 g Answer: 9.03 g
◉ 9.7 x 10^7 km NE Answer: Vector
◉ 3,250,000s Answer: 37.6 days
◉ A football player receives a kick at the opponent's 30-yard line. He
scrambles back and forth, left and right, but ends at the same spot he
caught the ball. The player, therefore, ( did not, did) move a certain
distance. Answer: Did
◉ What is the average speed ( in km/h) of Zhana, who runs to the store
that is 4.0 km away in 30.0 minutes? Answer: 8.0 km/h
◉ If a skier skis down the hill at 70.0 km/h for 20.0s, and then skis up a
slope at 15.0 km/h for 10.0s what is the skier's average velocity?
Answer: 41.6 km/h downhill
,◉ How long does a car with an acceleration of 2 m/s^2 take to go from
15 m/s to 35 m/s? Answer: 10s
◉ Can an object move in a circular path without being accelerated?
Answer: No
◉ The radius of the path of an object in uniform circular motion is
halved. The centripetal acceleration needed, given that its speed
remains the same, is? Answer: Twice as great as before
◉ A runner is moving at a constant speed of 8.00 m/s around a circular
track. If the distance from the runner to the center of the track is 28.2
m,what is the centripetal acceleration of the runner? Answer: 2.27
m/s^2
◉ If a wheel falls from an airplane that is flying horizontally at an
altitude of 500 m, how long will it take for the wheel to strike the
ground? Answer: 10s
◉ A ball is thrown vertically upward. What is the acceleration right
before it hits the earth? Answer: It remains constant.
◉ A 430 g football is lying on the ground, then is kicked and is moving
at 25 m/s. If the duration of the impact was 0.0010 s, what was the
average force on the ball? Answer: 1.1 x 10^4 N
, ◉ Is it possible for an object to be in equilibrium ( no net force) , if only
one force is acting on it? Answer: No
◉ The weight of a 630 g piece of ham is Answer: 6.2 N
◉ The gravitational acceleration of an object Answer: Varies somewhat
over the earth's surface.
◉ A 69.5 kg runner is moving at constant speed of 8.00 m/s around a
circular track. If the distance from the runner to the center of the track
is 28.2 m, what is the centripetal force needed to keep the runner in
circular motion? Answer: 158 N
◉ A horse of weight w presses down on the ground with a magnitude F
and becomes airborne as a result. The magnitude of the force the
ground exerted on the horse must have been? Answer: More than w
and equal to F
◉ A 62.0 kg water skier at rest jumps from the dock into a 775 kg boat
at rest on the east side of the dock. If the velocity of the skier is 4.50
m/s as she leaves the dock, what is the final velocity of the skier and
the boat? Answer: 0.360 to the east
TESTED QUESTIONS AND CORRECT
SOLUTIONS
◉ 6.94 x 10^3 mm- 4.5 x 10^2 mm Answer: 6.5 x 10^3 mm
◉ 3.981 g + 5.05 g Answer: 9.03 g
◉ 9.7 x 10^7 km NE Answer: Vector
◉ 3,250,000s Answer: 37.6 days
◉ A football player receives a kick at the opponent's 30-yard line. He
scrambles back and forth, left and right, but ends at the same spot he
caught the ball. The player, therefore, ( did not, did) move a certain
distance. Answer: Did
◉ What is the average speed ( in km/h) of Zhana, who runs to the store
that is 4.0 km away in 30.0 minutes? Answer: 8.0 km/h
◉ If a skier skis down the hill at 70.0 km/h for 20.0s, and then skis up a
slope at 15.0 km/h for 10.0s what is the skier's average velocity?
Answer: 41.6 km/h downhill
,◉ How long does a car with an acceleration of 2 m/s^2 take to go from
15 m/s to 35 m/s? Answer: 10s
◉ Can an object move in a circular path without being accelerated?
Answer: No
◉ The radius of the path of an object in uniform circular motion is
halved. The centripetal acceleration needed, given that its speed
remains the same, is? Answer: Twice as great as before
◉ A runner is moving at a constant speed of 8.00 m/s around a circular
track. If the distance from the runner to the center of the track is 28.2
m,what is the centripetal acceleration of the runner? Answer: 2.27
m/s^2
◉ If a wheel falls from an airplane that is flying horizontally at an
altitude of 500 m, how long will it take for the wheel to strike the
ground? Answer: 10s
◉ A ball is thrown vertically upward. What is the acceleration right
before it hits the earth? Answer: It remains constant.
◉ A 430 g football is lying on the ground, then is kicked and is moving
at 25 m/s. If the duration of the impact was 0.0010 s, what was the
average force on the ball? Answer: 1.1 x 10^4 N
, ◉ Is it possible for an object to be in equilibrium ( no net force) , if only
one force is acting on it? Answer: No
◉ The weight of a 630 g piece of ham is Answer: 6.2 N
◉ The gravitational acceleration of an object Answer: Varies somewhat
over the earth's surface.
◉ A 69.5 kg runner is moving at constant speed of 8.00 m/s around a
circular track. If the distance from the runner to the center of the track
is 28.2 m, what is the centripetal force needed to keep the runner in
circular motion? Answer: 158 N
◉ A horse of weight w presses down on the ground with a magnitude F
and becomes airborne as a result. The magnitude of the force the
ground exerted on the horse must have been? Answer: More than w
and equal to F
◉ A 62.0 kg water skier at rest jumps from the dock into a 775 kg boat
at rest on the east side of the dock. If the velocity of the skier is 4.50
m/s as she leaves the dock, what is the final velocity of the skier and
the boat? Answer: 0.360 to the east
