Speed/Velocity
Luke rides his bike at a speed of eight miles per hour. How far does he ride in 4 hours?
32 miles
The net force on a vehicle that is accelerating at a rate of 2.5m/s^2 is 3000N. What is the mass of the vehicle?
1200 kg
What is the on the x-axis of a distance time graph?
the independent variable: time (units)
A force of 52 N acts upon a 4 kg block sitting on the ground. Calculate the acceleration of the object.
a= F/m
a= 52/4 = 13 m/s2
What type of mixture is brownie batter?
Homogeneous Mixture
Chad went to the skate park and skated 8 miles in 1.5 hours. What was the speed at which Chad skated?
5.3 mph
If a student kicks a kickball into center field, what are the force(s) acting on the ball after it has been kicked?
Air resistance and Gravity
What is on the y-axis of a distance-time graph?
the dependent variable: distance or position (units)
what is the mass of an object if a force of 17 N causes it to accelerate at 1.5 m/s2?
m = F/a
m = 17/1.5 = 11.3 kg
Which law?: A student flies forward when he is pushed by another student in a rolling chair that is suddenly stopped.
1st law
A cruise ship was traveling in a straight line across the Atlantic Ocean. It traveled 60 miles every three hours. At what average speed was the cruse ship traveling.
20 mph
Two soccer players kick a ball at the same time in opposite directions. Player A kicks the ball with 350N of force and Player B kicks the ball with 425N of force. What is the Net Force acting on the ball?
75N in favor of Player B's kick
How would you calculate the average speed using a distance-time?
Find the slope
Which law of motion?: A climber pulls down a rope causing his body to lift upward and rise along the rope.
3rd law
Kg measures _________.
N measures __________.
m/s2 measures ________.
mass, force, acceleration
An object traveled a distance of 200 miles at 50 mph. How long was the object in motion for?
4 hours
A paddle-boarder sets into a river and applies a force of 10N going North. The current of the river is moving South with a force of 3N. What is the resulting force on the paddle-boarder and in what direction?
7N North
Describe the speed of a linear line. Describe the speed of a horizontal line.
Linear: constant speed
Horizontal: no speed, 0 m/s
Which law of motion?: An object's change in speed and direction depends on the mass of the object and the force applied to it.
2nd law
What are all the energies are involved when using a hair dryer?
Electrical -> Mechanical + Sound + Radiant + Thermal
What is the difference between speed and velocity? Give an example for both.
speed: change in motion
velocity: speed with direction
units for speed: m/s
Which Newton's Law deals with Force, Mass and Acceleration?
2nd Law
If the slope is negative on a distance time graph, what does that mean about the velocity of the object?
It is slowing down.
Which law of motion?: every action has an equal and opposite reaction.
3rd law
3rd law