Exit Ticket: Speed

Which of these shows the information you need in order to determine the speed at which something is moving?

• time and mass
• time and distance
• distance and mass
• force and time

A runner measured the time it took him to run 5 km. What can he calculate from the distance and time measurements?

• direction
• mass
• speed
• force

If a car is moving backward along a road, can its speed be measured?

• Yes, it can, because the car does not have friction acting on it.
• Yes, it can, because the car travels a distance in a certain amount of time.
• No, it cannot, because speed can only be measured if the car is moving forward.
• No, it cannot, because the distance traveled backward by a car cannot be measured.

Scientists discover an asteroid that is moving through space. What information is needed to determine the average speed of the asteroid?

• the mass and size of the asteroid
• the distance the asteroid is from the Earth
• the direction the asteroid is moving and its distance from Earth
• how far the asteroid has moved in 24 hours

A bowling ball moves across a flat surface at 7 feet per second. If a student is asked to calculate the total distance traveled by the ball, what other information does the student need to know?

• amount of friction between the ball and the surface
• amount of force applied to the ball
• total time the ball rolled
• mass of the ball