Julian rides his horse 2400 meters in 10 minutes. What is his average speed in m/s?
Be sure to show: formula, substitution with units, final answer with units.
Cars, bicycles, animals, and people are all objects that can be in motion. Which statement about motion is correct?
a) An object in motion is accelerating.
b) Motion is the change in position of an object.
c) Gravity and friction are responsible for all motion.
d) An object in motion has no speed, but it does have velocity.
A ball rolls straight down hill at a constant speed. What is changing as the ball rolls?
a) position
b) acceleration
c) speed
d) velocity
To make sure your measurements are clear, it is important to use appropriate units. Which of these is a unit of speed?
a) seconds per gram (s/g)
b) meters per second (m/s)
c) grams per milliliter (g/mL)
d) milliliters per second (mL/s)
A roller coaster speeds up as it travels downhill and then slows as it enters a curve. Which statement best describes the motion of the roller coaster during this trip?
a) velocity changes, but acceleration remains constant
b) the velocity of the roller coaster remains constant
c) the roller coaster accelerates throughout the trip
d) the speed of the roller coaster remains constant