Question: Which one, temperature, velocity, acceleration, or displacement, is not a vector quantity?
Answer Options:
A) Temperature
B) Velocity
C) Acceleration
D) Displacement
Answer: A) Temperature
Question: An object moves 20 m east in 30 s and then returns to its starting point taking an additional 50 s. If west is chosen as the positive direction, what is the sign associated with the average velocity of the object?
Answer Options:
A) 0, no sign
B) Positive
C) Negative
D) Cannot be determined
Answer: A) 0, no sign
Question: An object moves 20 m east in 30 s and then returns to its starting point taking an additional 50 s. If west is chosen as the positive direction, what is the average speed of the object?
Answer Options:
A) 0.50 m/s
B) 1.00 m/s
C) 0.25 m/s
D) 1.25 m/s
Answer: A) 0.50 m/s
Question: A cheetah can run at approximately 100 km/hr and a gazelle at 80.0 km/hr. If both animals are running at full speed, with the gazelle 70.0 m ahead, how long before the cheetah catches its prey?
Answer Options:
A) 12.6 s
B) 14.0 s
C) 16.2 s
D) 10.0 s
Answer: A) 12.6 s
Question: A railroad train travels forward along a straight track at 80.0 m/s for 1,000 m and then travels at 50.0 m/s for the next 1,000 m. What is the average velocity?
Answer Options:
A) 61.5 m/s
B) 65.0 m/s
C) 70.0 m/s
D) 75.0 m/s
Answer: A) 61.5 m/s
Question: A European sports car dealer claims that his car will accelerate at a constant rate from rest to 100 km/hr in 8.00 s. If so, what is the acceleration?
Answer Options:
A) 3.47 m/s²
B) 4.00 m/s²
C) 5.00 m/s²
D) 6.00 m/s²
Answer: A) 3.47 m/s²
Question: A European sports car dealer claims that his product will accelerate at a constant rate from rest to a speed of 100 km/hr in 8.00 s. What is the speed after the first 5.00 s of acceleration?
Answer Options:
A) 17.4 m/s
B) 20.0 m/s
C) 22.5 m/s
D) 25.0 m/s
Answer: A) 17.4 m/s
Question: A v vs. t graph is drawn for a ball moving in one direction. The graph starts at the origin and at t = 5 s the acceleration of the ball is zero. What is the velocity of the ball at t = 5 s?
Answer Options:
A) The velocity of the ball is not changing
B) The velocity is increasing
C) The velocity is decreasing
D) The velocity is zero
Answer: A) The velocity of the ball is not changing
Question: An a vs. t graph is drawn for a car moving in one direction. The graph shows a horizontal line at a = 5 m/s² from t = 0 s to t = 5 s. What is the velocity of the ball at t = 5 s? Assume the car is initially at rest.
Answer Options:
A) 25 m/s
B) 20 m/s
C) 30 m/s
D) 15 m/s
Answer: A) 25 m/s
Question: A 50-g ball traveling at 25.0 m/s is bounced off a brick wall and rebounds at 22.0 m/s. A high-speed camera records this event. If the ball is in contact with the wall for 3.50 ms, what is the average acceleration of the ball during this time interval?
Answer Options:
A) 13,400 m/s²
B) 12,500 m/s²
C) 10,000 m/s²
D) 15,000 m/s²
Answer: A) 13,400 m/s²
Question: A ball is pushed with an initial velocity of 4.0 m/s. The ball rolls down a hill with a constant acceleration of 1.6 m/s². The ball reaches the bottom of the hill in 8.0 s. What is the ball’s velocity at the bottom of the hill?
Answer Options:
A) 17 m/s
B) 10 m/s
C) 8 m/s
D) 15 m/s
Answer: A) 17 m/s
Question: A cart is given an initial velocity of 5.0 m/s and experiences a constant acceleration of 2.0 m/s². What is the magnitude of the cart’s displacement during the first 6.0 s of its motion?
Answer Options:
A) 36 m
B) 42 m
C) 50 m
D) 66 m
Answer: D) 66 m
Question: When a drag strip vehicle reaches a velocity of 60 m/s, it begins a negative acceleration by releasing a drag chute and applying its brakes. While reducing its velocity back to zero, its acceleration along a straight line path is a constant -7.5 m/s². What displacement does it undergo during this deceleration period?
Answer Options:
A) 200 m
B) 240 m
C) 260 m
D) 280 m
Answer: B) 240 m
Question: A drag racer starts from rest and accelerates at 10 m/s² for the entire distance of 400 m (1/4 mile). What is the velocity of the race car at the end of the run?
Answer Options:
A) 80 m/s
B) 85 m/s
C) 89 m/s
D) 95 m/s
Answer: C) 89 m/s
Question: A Cessna aircraft has a lift-off speed of 120 km/hr. What minimum constant acceleration does this require if the aircraft is to be airborne after a take-off run of 240 m?
Answer Options:
A) 2.31 m/s²
B) 2.50 m/s²
C) 2.70 m/s²
D) 3.00 m/s²
Answer: A) 2.31 m/s²