1D Kinematics
Equations
Graphs
2D Kinematics
Conceptual Problems
100
Write down 2 kinematic formulas.
x= xi + Vit+(1/2at2)
Vf = Vi + at
Vf2= Vi2 + 2as
(there are more, these are main 3)
100
Rearrange this formula to solve for Vi:
V = V0 + at
V0 = V - at
100
What are the SI units for acceleration?
m/s2
100
A projectile is shot at 15 m/s with a 45-degree angle to the ground. At its peak, what is the horizontal velocity of the projectile?
10.6 m/s
100
What's the difference between distance and displacement?
Distance is the total how much ground an object has covered during its motion.
Displacement is the change of position of an object (only relies on initial and final position)
200
An object is thrown vertically up in the air with an initial velocity of 3 m/s. At its peak, what is the acceleration and velocity of the object?
Acceleration: -9.8 m/s2
Velocity: 0 m/s
200
A golf ball is given an initial velocity of 7 m/s, it rolls down a hill at a rate of 3m/s2 until is reaches the bottom of the hill 5 seconds later.
How far did the golf ball roll down the hill?
72.5 meters
200
The slope of a velocity v time graph is equal to which quality of an object's motion?
acceleration
200
A soccer ball, at rest on the ground, is kicked with an initial velocity of 10 m/s at a launch angle of 30°. Calculate its total flight time, assuming that air resistance is negligible.
1 s
200
A car company says that their new electric car can drive "from 0 to 60mph" in 9 s. This is a description of what?
Average acceleration
300
A speed boat travels 21 km at a constant speed. Assuming it traveled at 35m/s, how long was the speed boat traveling?
600 s
300
A stone is thrown vertically upwards with a speed of 20.0 m/s. how fast is it moving when it reaches a height of 12.0m?
12.8 m/s
300
What is the average velocity of the object?
0.7 m/s
300
A cat is thrown horizontally with an initial velocity of 30 m/s from a bridge. Find the cat's total speed when it enters the water 4 seconds later, assuming that air resistance is negligible.
50 m/s
300
What is the area under the curve in a velocity-time graph?
Displacement
400
An apple is dropped off of a building and falls for 7 seconds before hitting the ground. What is the height of the building?
240.1 m
400
A sports car, picking up speed, passes between two markers in a time of 4.1 s. The markers are separated by 120 m. All the while, the car accelerates at 1.8 m/s2. What is its speed at the second marker?
What is 33 m/s?
400
Is the acceleration constant throughout the object's motion?
No
400
A bullet is shot at 1050 m/s horizontally. If the shooter holds the tip of the barrel 1.5 m above the ground, how far horizontally will the bullet travel before striking the ground?
580.95 m
400
A person traveling towards the north changes the direction of the velocity towards the east. Predict approximately the direction of the acceleration.
towards south-east
500
A stone is thrown vertically upwards with a speed of 20.0 m/s. How fast is the stone moving when it reaches a height of 12 m?
+- 12.8 m/s
500
A train accelerates from a speed of 25.0 m/s to rest in 10.0s. Assuming the acceleration to be constant over this interval, find the magnitude of the acceleration.
What is +2.50 m/s2?
500
What is the velocity of a projectile at the top of it's path in the +y direction?
0
500
How far can a long jumper leap on the moon if the player leaves the ground at 20 degrees and at a speed of 11.0 m/s? The acceleration due to gravity on the moon is 2.5 times less than on Earth
19.85 m
500
A car traveling at a speed of v0 applies its brakes, skidding to a stop over a distance of x m. Assuming that the deceleration due to the brakes is constant, what would be the skidding distance of the same car if it were traveling at twice the initial speed?
4x m