Physics Unit 1 Quiz 5
- 1.
- A bullet is fired at an angle of 45O. Neglecting air resistance, what is the direction of acceleration during the flight of the bullet?
- A.
Upward
- B.
Dependent on the initial velocity
- C.
Downward
- D.
At a 45 O angle
- 2.A golfer drives her golf ball from the tee down the fairway in a high arching shot. When the ball is at the highest point of its flight:
- A.
The velocity and acceleration are both zero
- B.
The x-velocity is zero and the y-velocity is zero
- C.
The x-velocity is non-zero and the y-velocity is zero
- D.
The velocity is non-zero and the acceleration is zero
- 3.For a projectile, what is the acceleration in the x-direction?
- A.
Depends on initial velocity
- B.
Depends on how long it is in the air
- C.
0 m/s2
- D.
Depends on y-acceleration
- 4.An object is launched at an angle. How does the final velocity compare to the initial velocity if it lands at the same horizontal level?
- A.
Opposite
- B.
Unable to determine
- C.
Equal and opposite
- D.
Equal
- 5.A volleyball player taps a volleyball well above the net. The ball’s speed is least
- A.
Just after it is tapped by the player.
- B.
At the highest point of its path.
- C.
Just before it strikes the ground.
- D.
When the horizontal and vertical components of its velocity are equal.
- 6.Which of the following is NOT true of a projectile launched from the ground at an angle?
- A.
The horizontal velocity is constant
- B.
The vertical acceleration is upward during the first half of the flight, and downward during the second half of the flight.
- C.
The horizontal acceleration is zero.
- D.
The vertical acceleration is 9.81 m/s2 down.
- E.
The time of flight can be found by horizontal distance divided by horizontal velocity.
- 7.As the launch angle of a projectile is increased from an angle of 0° to an angle of 90°, the range of a projectile will:
- A.
Increase then decrease
- B.
Decrease then increase
- C.
Remain unchanged
- D.
Increase only
- 8.The narrowest straight on Earth is Seil Sound in Scotland, which lies between the mainland and the island of Seil. The straight is only about 6.0 m wide. Suppose an athlete waning to jump “over the sea” leaps at an angle of 35o with respect to the horizontal. How much time does the athlete spend in the air?
- A.
1.32 s
- B.
0.84 s
- C.
0.93 s
- D.
1.77 s
- 9.The narrowest straight on Earth is Seil Sound in Scotland, which lies between the mainland and the island of Seil. The straight is only about 6.0 m wide. Suppose an athlete waning to jump “over the sea” leaps at an angle of 35o with respect to the horizontal. What is the maximum height reached by the athlete?
- A.
1.05 m
- B.
0.18 m
- C.
0.02 m
- D.
0.35 m
Questions: 24 | Attempts: 73 | Last updated: Dec 31, 2012
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