Midterm Quiz Part 2

A car is traveling at 10 m/s accelerates at a constant rate of 2 m/s^2 for 4.0 s. What distance did the motorcyclist travel while he was accelerating?

• 48m

• 50m

• 42m

• 56m

Tags

NGSS.HS-PS2-1

A bus accelerates at 0.50 m/s^2 over a distance of 100 m and reaches a velocity of 15 m/s. What was the truck’s initial velocity?

• 325 m/s

• 11.18 m/2

• 125 m/s

• 18.03 m/s

Tags

NGSS.HS-PS2-1

When perpendicular vectors are added, what is true about the resultant vector?

• The resultant vector is zero
• The resultant vector is equal to the sum of the magnitudes of the two vectors
• The resultant vector is equal to the difference of the magnitudes of the two vectors
• The resultant vector is equal to the square root of the sum of the two vectors squared

1. Find the resultant vector of a man who walks 500m N, 100m S, and 75m E.

• 604.67m North-East

• 505.59m North-East

• 406.97m North-East

• 500.62m North-East

What is the acceleration due to gravity on Earth? What sign does it always have? Why?

• 9.8 m/s/s

  Positive (+)

  gravity goes down

• 9.8 m/s/s

  Positive (+)

  gravity goes up

• 9.8 m/s/s

  Negative (-)

  gravity goes up

• 9.8 m/s/s

  Negative (-)

  gravity goes down

Tags

NGSS.HS-PS2-4

All objects fall at the same ____________

Tags

NGSS.HS-PS2-1

Draw a diagram showing how far an object has fallen after 1 s, 2 s, 3 s, and 4 s.

Tags

NGSS.HS-PS2-1

NGSS.HS-PS2-4

A soccer ball rolls over the edge of a cliff with a velocity of 2 m/s. If the cliff is 60 m high, how far away does land from the base of the cliff below assuming we are on earth.

• 7 m

• 8m

• 6.5

• 6m

Tags

NGSS.HS-PS2-4

What happens to the Horizontal and Vertical Velocity of a projectile as the object moves it's path?

• Horizontal Velocity: Constant

  Vertical Velocity: Zero

• Horizontal Velocity: Decrease then Increase

  Vertical Velocity: Increase then Decrease

• Horizontal Velocity: Constant

  Vertical Velocity: Decrease then Increase

• Horizontal Velocity: Increase then Decrease

  Vertical Velocity: Constant

At point Q Vertical Velocity is______ and acceleration due to gravity is ________?

• zero/down

• positive/up

• positive/down

• zero/up

Tags

NGSS.HS-PS2-1

NGSS.HS-PS2-4