Conceptual Physics - Linear Motion

A race car goes by at a constant speed of 200 mph. The best description of its acceleration is to say it is

• greater than the typical acceleration of a passenger car.

• in the direction the race car is moving.

• both A and B

• Actually, no acceleration is observed.

Acceleration is defined as

• change in position over time

• change in velocity over time

• how fast an object is moving

• a force that causes the object to go fast

Tags

NGSS.HS-PS2-1

A jet travels at 600 km/hr for two hours. How far does it go?

What is an additional way to make a car accelerate, brakes, gas pedals and _______

Tags

NGSS.HS-PS2-1

NGSS.HS-PS2-3

How fast does a freely falling object accelerate?

Tags

NGSS.HS-PS2-1

Why does a falling book hit a table earlier than a piece of paper, when they are dropped from the same height?

• its heavier

• air resistance

• they don't - they actually fall at the same speed.

Tags

NGSS.HS-PS2-1

A toy car moves 8 meters in 4 seconds, the average speed of the car is

• 1 m/s

• 2 m/s

• 32 m/s

• 0.5 m/s

A train can move at 50 km/hr, how far will it move in 5 hours?

• 10 km

• 250 km

• 0.5 km

• 55 km

Is your friend correct when he says "The racecar rounded the curve at a constant velocity of 100 miles per hour?"

• yes

• no

• need more information

Is your friend correct when they say "In free fall, air resistance is more effective in slowing a feather than a coin."?

• yes

• no

• need more information