Distance
What is distance?
measures the length between objects or points without regard for direction.
A car moved 80 km to the South. What is its displacement?
80 km south
Calculate the average speed of an object which travels 300m in a time of 6 seconds.
50 m/s
How to measure velocity?
velocity = distance / time.
Top fuel dragster cars can accelerate from rest down a quarter mile track (400 meters) in under 4 seconds. Assuming constant acceleration, what would the acceleration of a dragster be if it sped down a track in exactly 4 seconds?
50 m/s^2
How to measure distance?
distance = rate / time.
If a car moves 12 km North, 19 km East, and 12 km South, what is its displacement?
19 km
What is speed?
The rate of change of position of an object in any direction.
What is the average velocity of a car that moved 60km in 3 hours?
20 km/h
An ambulance is currently traveling at 15m/s, and is accelerating with a constant acceleration of 5 m/s\[^2\] . The ambulance is attempting to pass a car which is moving at a constant velocity of 30m/s. How far must the ambulance travel until it matches the car’s velocity?
67.5 m
A car moved 60 km East and 90 km West. What is the distance?
150 km
What is displacement?
the change in position of an object.
A sprinter runs 100m in 10seconds, what is the average speed of the sprinter?
10 m/s
If car A is at 40 km/h and car B is at 10 km/h in the opposite direction, what is the velocity of the car A relative to the car B?
50 km/h
How to measure acceleration?
acceleration = velocity / time.
How far will a car travel in 25 min at 12 m/s?
18 km
A car moved 60 km East and 90 km West. What is the displacement?
30 km west
How to measure speed?
speed = distance / time.
If you are walking at constant velocity of 8 km/h and a car passed you by at the speed of 30 km/h from behind, what is the car's velocity from your viewpoint?
22 km/h
What is acceleration?
rate at which velocity changes with time, in terms of both speed and direction.
How far will a car travel in 2 hours at 20 m/s?
144 km
How to measure displacement?
displacement =
1/2 (initial velocity + final velocity) * time
A car travels from point A to B in 3 hours and returns back to point A in 5 hours. Points A and B are 150 miles apart along a straight highway. What is the average speed?
The average speed is 37.5 mph
What is velocity?
the distance covered by an object in unit time.
A Boeing 747 aircraft has a landing speed of 72 m/s, and upon landing it is able to come to a stop in 2,000 m. Assuming constant deceleration, how long would it take for a Boeing 747 to come to a full stop?
56 sec