Definitions
Units [Standard Edition]
Multiple Choice
Time for some GUESS work
100
Something that is launched or thrown.
What is a projectile?
100
distance
What is meters?
100
A golf ball is given an initial speed of 20. meters per second and returns to level ground. Which launch angle above level ground results in the ball traveling the greatest horizontal distance?
(1) 60.°
(2) 30.°
(3) 45°
(4) 15°
(3) 45°
100
Grace throws a baseball horizontally at a speed of 14.0m/s from the top of a 3.5 m building. How long does it take the ball to reach the ground?
What is 0.84 seconds?
200
Path of a thrown/launched object.
What is trajectory?
200
time
What are seconds?
200
An object in circular motion travels a distance of _____ during its period.
(1) r
(2)
4pir^2
(3)
2 pi r
(4)
v^2/r
(3)
2 pi r
200
TJ throws a tennis ball 4.0 m/s vertically in the air and catches it 2.5 seconds later.
What is the ball’s max height?
What is 5.0 m/s?
300
This causes uniform circular motion.
What is centripetal force?
300
centripetal force
What are Newtons?
300
A ball is thrown horizontally at a speed of 24 meters per second from the top of a cliff. If the ball hits the ground 4.0 seconds later, approximately how high is the cliff?
(1) 6.0 m
(2) 39 m
(3) 78 m
(4) 96 m
(3) 78 m
300
Julia throws a playdough container with an initial velocity of 5 m/s at an angle of 25°
What are the x and y components of her throw?
viy= 2.1 m/s
vix=4.5 m/s
400
In this unit, horizontal and vertical components are ________________ of each other's motion.
What is independent?
400
centripetal acceleration
What are meters/second2?
400
A golf ball is hit at an angle of 45° above the horizontal. What is the vertical acceleration of the golf ball at the highest point in it’s trajectory?
(1) 9.81 m/s2 upward
(2) 0.0 m/s2 upward
(3) 9.81 m/s2 downward
(4) 0.0 m/s2 downward
(3) 9.81 m/s2 downward
400
Alexia’s 800-kg car moving at 8.0 m/s takes a turn around a circle with a radius of 15.0 m. Determine the acceleration acting on the car.
What is 4.3 m/s2?
500
__________ is important for solving problems where an object is vertically thrown.
What is Symmetry?
500
theta
What is degrees?
500
A ball attached to a string is moved at constant speed in a horizontal circular path. A target is located near the path of the ball as shown in the diagram.
At which point along the ball’s path should the string be released, if the ball is to hit the target?
(1) A (2) B (3) C (4) D
(2) B
500
Jeigelsaurus is riding on the Cliffhanger with a radius of 3.5 meters. If the centripetal force acting on Jeigelsaurus is 1400 N and the velocity is 7 m/s, then what is the mass of Jeigelsaurus?
What is 100 kg?