Defenition
Displament is a vector quantity?
True or false
True
What is the formula for calculating speed?
speed= distance/time
SI unit for measuring distance or displacement
meters
if an object moves 8 meters east and then 3 meters west, what is its net displacement?
5 meters
planet in our solar system is the acceleration due to gravity the closest to that on Earth's surface?
Mars
The change in velocity over time
acceleration
A word to refer to negative acceleration?
deceleration
unit used to measure speed in the International System of Units
m/s
if a bicycle travels 10 kilometers in 2 hours, what is its speed in kilometers per hour?
5 km/h
According to Newton's third law of motion, for every action, there is an equal and opposite
Reaction
type of speed describes the rate at which an object is moving at a specific moment in time?
Instantaneous speed
9.81 m/s2
SI unit of acceleration
m/s2
What is the acceleration of an object moving with a constant speed?
Zero
Which of Newton's laws states that the acceleration of an object is directly proportional to the net force acting on it and inversely proportional to its mass?
2nd
The scalar quantity that represents the length of the path traveled by an object without considering direction
Distance
formula for acceleration
Acceleration = (Final Velocity - Initial Velocity) / Time
1 hour has ________sec
1km has__________m
3600 sec
1000m
If a car accelerates from 10 m/s to a speed of 30 m/s in 5 seconds, what is its acceleration
4 m/s2
A book on a table will remain at rest until someone applies a force to move it, example for the ________law
1st law
type of speed that measures the total distance traveled divided by the total time taken, including changes in speed?
Average speed
Formula for the 2nd law of newton
F=ma
Solve:
F= m*a
1kg . m/s2 = 1Newton
Two cars, travel in the same direction on a straight road. Car A travels at 60 km/h, and car B travels at 145 km/h. What is the relative speed of car A with respect to car B?
85km/h
if you push a shopping cart with a certain force, it will accelerate, and the acceleration will be greater if the cart is lighter or if you push harder., example for the______law
2nd law