Kinematics #1

During a wildlife documentary shoot, a gazelle was observed to travel 2 km in a half hour. What was the gazelle’s average speed?

• 1/2 km/h

• 1 km/h

• 2 km/h

• 4 km/h

Constant speed in a constant direction is

• constant velocity

• constant acceleration

• instantaneous speed

• average velocity

When driving a car, you experience acceleration when you

• press the gas pedal to increase speed

• press the brake pedal to decrease speed

• turn the steering wheel to change direction

• do all of the above

Tags

NGSS.HS-PS2-1

John is studying physics and he came across a term that describes a Vector and it's proper units. Which of the following terms is he likely studying?

• John is studying the position of an object in seconds

• John is studying the distance covered by a car in meters

• John is studying the speed of a car in mph

• John is studying the velocity of a moving object in m/s

A car goes from rest to 30 m/s. If it takes the car 40 seconds to reach that speed then what is the car's rate of acceleration?

• 1.33 m/s²

• 0.75 m/s²

• 10 m/s²

• 0 m/s²

Tags

NGSS.HS-PS2-1

A soccer ball is kicked into the air. Does it have a negative or positive velocity while moving upwards?

• Negative

• Positive

Does downward movement of an object have a negative or positive velocity?

• Negative

• Positive

Tags

NGSS.HS-PS2-1

What is the correct unit to measure an object's acceleration in kinematics?

• m/s

• m/min²

• m/s/t

• m/s²

Tags

NGSS.HS-PS2-1

When an object starts from rest, what is its original velocity?

• Depends on the problem

• 0

• Always positive

• Always negative

If an object comes to a stop in a problem, what is its final velocity?

• Depends on the problem

• 0

• Always positive

• Always negative