Help 1. John rode his bike for one hour. He noticed that he traveled farther in the first 30 minutes then he did in the second thirty minutes. What conclusion can John draw about his bike ride?

A. He walked in many directions.

B. He was walking at a constant speed.

C. He walked at a faster average speed the first 30 minutes

D. He walked at a slower average speed the first 30 minutes

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

A the mass and size of the asteroid

B the distance the asteroid is from Earth

C the direction the asteroid is moving and its distance from Earth

D how far the asteroid has moved in 24 hours

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

A Yes, it can, because the car does not have friction acting on it.

B Yes, it can, because the car travels a distance in a certain amount of time.

C No, it cannot, because speed can only be measured if the car is moving forward.

D No, it cannot, because the distance traveled backward by a car cannot be measured.