# Physics Unit 1 Quiz 5

10 Questions | Attempts: 176  Settings  • 1.
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

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