Kinematics & Free Fall

Answer conceptual and calculation questions about one-dimensional motion

Science

6 plays

10 questions

[Deleted Account]

•about 7 years ago

Question 1

Multiple Choice

1 point

Kinematics is the study of __________.

A.Motion

B.Forces

C.Gravity

D.Mechanics

Question 2

Multiple Choice

1 point

In the kinematic equations, vf represents _______.

A.Final vector

B.Fundamental velocity

C.Final velocity

D.Functional velocity

Question 3

Multiple Choice

1 point

"An airplane accelerates down a run-way at 3.20 m/s/s for 32.8 s until is finally lifts off the ground." 3.20 m/s/s is the plane's _______.

A.Initial velocity

B.Displacement

C.Final velocity

D.Acceleration

Question 4

Multiple Choice

1 point

"A race car accelerates uniformly from 18.5 m/s to 46.1 m/s in 2.47 seconds." What equation do you need to find its acceleration?

A.d=vit+1/2at^2

B.vf=vi+at

C.vf^2=vi^2+2ad

D.d=[(vi+vf)/2]*t

Question 5

Multiple Choice

1 point

In a vacuum (no air), which will fall faster?

A.A heavy text book

B.A sheet of paper

C.They will fall at the same rate

D.It depends on how you drop the paper

Question 6

Multiple Choice

1 point

If an object is in free fall, what MUST be true?

A.It is speeding up

B.Its acceleration is increasing

C.The only force acting on it is gravity

D.Its velocity is constant

Question 7

Multiple Choice

1 point

You throw a tennis ball into the air. At a given moment, it has positive velocity and negative acceleration. What is the tennis ball doing?

A.Moving up and speeding up

B.Moving down and speeding up

C.Moving down and slowing down

D.Moving up and slowing down

Question 8

Multiple Choice

1 point

Acceleration due to gravity is ______.

A.-10 m/s/s

B.-10 m/s

C.+10 m/s/s

D.+1.0 m/s/s

Question 9

Multiple Choice

1 point

A feather is dropped on the moon from a height of 1.40 meters. The acceleration of gravity on the moon is 1.67 m/s^2. What is assumed in this question?

A.Gravity is 10 m/s/s

B.Final velocity is 0 m/s

C.Initial velocity is 0 m/s

D.The feather will float because it is on the moon.

Question 10

Multiple Choice

1 point

In order to find your reaction time in lab, what data did we need to COLLECT?

A.How far the ruler fell (displacement)

B.How fast the ruler was falling when you caught it (final velocity)

C.How long the ruler was falling before you caught it (time)

D.How quickly the ruler was speeding up (acceleration)