What unit is used to measure force? A. Meters per second
B. Meters
C. Grams
D. Newtons

Voyager 2 is a space probe, launched in 1977,
to study the outer planets. It will continue to
travel through space for thousands of years
without stopping. Which of Newton's laws
does this describe?
A. 1st
B. 2nd
C. 3rd
D. 1st and 2nd

Which two properties are used to
describe motion?
A. Speed and time
B. Length and time
C. Mass and distance
D. Distance and speed

Total distance divided by total time is?
A. Acceleration
B. Positive acceleration
C. Average speed
D. Constant speed

A: 9
B: 1
C: 4
D: 6