Vectors/Distance/Displacement
Graphs
Velocity and Acceleration
Kinematics
Newtons Law's
100
What is the difference between distance and displacement?
Distance = total path length;
Displacement = straight-line change in position
100
On a position-time graph, what does the slope represent?
Velocity
100
A car travels 100 m in 5 s. What is its speed?
20 m/s
100
What is the equation for average velocity?
v=d/t
100
State Newton’s 1st Law.
An object at rest stays at rest, an object in motion stays in motion unless acted on by an unbalanced force
200
True or False: Displacement can never be greater than distance.
True
200
On a velocity-time graph, what does the slope represent?
Acceleration
200
A car changes velocity from 0 to 30 m/s in 10 s. What is its acceleration?
3 m/s²
200
List the three kinematic equations.
200
State Newton’s 2nd Law
F=ma
300
A runner goes 3 m east, then 4 m north. What is their displacement?
a2+b2= c2
5 m
300
A flat line on a velocity-time graph means what about the motion?
Constant velocity
300
A train moves at 25 m/s for 40 s. How far does it travel?
1000 m
300
An object starts from rest and accelerates at 2 m/s² for 5 s. What is its final velocity?
10 m/s
300
State Newton’s 3rd Law
For every action, there is an equal and opposite reaction
400
If a car travels 60 km north and then 60 km south, what is its distance and displacement?
Distance = 120 km; Displacement = 0 km
400
How do you find displacement from a velocity-time graph?
Calculate the area under the curve/line
400
A car slows from 20 m/s to 5 m/s in 3 s. What is its acceleration?
-5 m/s²
400
A car accelerates from 10 m/s to 30 m/s over 5 s. Find displacement.
d=vi x t+(.5 x a x t2)
d=vixt+(.5 x a x t2)
10(5)+0.5(4)(25)
50+50=100 m
400
A 500 kg object accelerates at 2 m/s². What is the net force?( include units in answers)
1,000 Newtons
500
If annie travels 3m west , 5 north, 3 west, 6 east, 5 south. Whats the distance and displacement?
Distance:22m
Displacement: 0m
500
A position-time graph curves upward, getting steeper over time. What does that indicate?
The object is accelerating
500
A plane moves at 60 m/s north, then 60 m/s east. What is its resultant velocity magnitude?
≈ 84.9 m/s
500
A car is going 10 m/s and accelerates at a rate of 2m/s2. Calculate how far it went when it reaches 20 m/s.
vf2=vi2+(2xaxd)
20^2=10^2 + (2x2xd)
400=100+4d
300=4d
75=d
500
Julio hit a baseball super duper hard he produced 47 Newtons of force on the .5 kg ball. What was the acceleration of the ball?
F=mxa
94m/s