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Changes in our speed, direction or both are called?
Acceleration
This is the rate of a moving object based only on distance and time.
Speed
What two measurements are necessary for calculating speed?
distance and time
What is speed?
distance covered over a certain period of time
What is the formula to calculate speed?
S = d/t
A car accelerates from a standstill to 70 m/s in 10 seconds. What is the acceleration?
7 m/s/s
Is it still considered acceleration when a car goes around in circles at a constant speed?
Yes, because of changing directions
A runner races in the 100 meter dash. It takes her 10 seconds to finish. What is her average speed
10 m/s
Acceleration is defined as the change in velocity divided by?
time
What is the average speed of a person who swims 105m in 70s?
1.5 m/s
