Physics Unit 1 Quiz 5

10 Questions | By Amoverby | Updated: Mar 18, 2022 | Attempts: 176

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1.
1. A bullet is fired at an angle of 45^O. 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 35^o 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 35^o 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