a science class takes a toy cart and rolls it down an incline. they measure the distance the cart...

A science class takes a toy cart and rolls it down an incline.

They measure the distance the cart travels. The investigation is repeated changing the angle of incline of the ramp. The mass of

the cart and the length of the ramp are kept constant. What is the relationship being studied?

For 1000 points

The effect of the angle of incline of the ramp on distance

the cart travels.

A science class takes a toy cart and rolls it down an incline. They

measure the distance the cart travels. The investigation is

repeated changing the angle of incline of the ramp. The mass of

the cart and the length of the ramp are kept constant. What are the

dependent and independent variables?

For 15000 points

dependent variable – distance cart travels

independent variable – angle of incline

Write the general mathematical question for each graph depicted

below.

For 500 points

a. y = bb. y2 = mx + b

c. y = m(1/x) + bd. y = mx + be. y = mx2 + b

How would you make a straight line graph for the data below?

For 800 points

Invert the volume values

What is the relationship between the variables for the graph below.

For 400 points

Pressure is inversely proportional to volume

Explain the relative motion for the two objects below.

For 200 points

Object 2 moves slower than object 1 and moves toward the

origin, while object 1 moves away from the origin.

Explain the relative motion of the two objects in the graph below.

For 1000 points

Object 2 is not moving, while object 1 moves at a constant speed away from the origin.

Describe the relative motion for the two objects in the graph below.

For 6000 points

Objects 1 and 2 move at the same speed.

What is the average speed for the object shown in the graph below?

For 600 points

5 m/s

How far did the car below travel in 3 seconds?

For 500 points

75 m

What is speed?

For 400 points

Speed is the distance covered per unit of time, or a measure of

how fast an object is moving

What value is obtained by looking at the speedometer in a

moving car?

For 800 points

instantaneous speed

If you take a trip that covers 200 km in 4 hours, what is your average speed?

For 200 points

50 km/h

What is the pair to the force of a ball pulling on the earth?

For 800 points

The earth pulling on the ball

If a horse exerts a force of 350 N on a wagon to make it

accelerate, what force does the wagon exert on the horse?

For 10000 points

350 N

What is the law of inertia?

For 4000 points

An object in motion will stay in motion and an object at rest will stay at rest unless acted on by

an outside force.

After a cannonball is fired into frictionless space, how much force

is required to keep it going?

For 500 points

No force is required to keep it going, only to stop it

What causes friction?

For 5000 points

Friction is caused by microscopic bumps that act as

obstructions to the object’s motion and always acts

opposite of motion.

A 15-N force and a 30-N force at on an object in opposite

directions. What is the net force on the object?

For 20000 points

15 N

When does equilibrium occur?

For 8000 points

When the net forces acting on the object are zero, or balanced.

A girl whose weight is 400 N hangs from the middle of a bar

supported by two vertical strands of rope. What is the

tension in each strand?

For 7000 points

200 N

An object weighs 40 N on earth and another object weighs 40 N on the moon. What can you say

about their relative masses?

For 40000 points

The object on the moon has a greater mass.

What causes acceleration?

For 400 points

A net force greater than zero.

When the mass of an object increases, what happens to

the acceleration of an object?

For 4000 points

The acceleration decreases.

How are acceleration and net force on an object related?

For 800 points

The acceleration of an object is directly proportional to the magnitude of the net force.

A girl pulls on a 5 kg wagon with a constant force of 25 N. What is the wagon’s acceleration?

For 500 points

5 m/s2

If the force of friction on a sliding object is 30 N, what is

the force needed to maintain a constant velocity?

For 100000 points

30 N

If the force acting on a cart doubles, what happens to the

cart’s acceleration?

For 200 points

It doubles.

Suppose a cart is being moved by a force. If suddenly a load is dumped into the cart so that the

cart’s mass doubles, what happens to the cart’s

acceleration?

For 600 points

It halves.

A player hits a ball with a bat. The action force is the impact of the bat against the ball. What is

the reaction to this force?

For 2000 points

The force of the ball against the bat

A person is attracted towards the center of Earth by a 500-N gravitational force. What is the force with which the Earth is

attracted to the person?

For 4000 points

500 N

What causes resistance?

For 5000 points

internal friction

Two spheres A & B are projected off the edge of a 2.0 m high table with the same horizontal velocity. Sphere A has a mass of 10. g and

sphere B has a mass of 5 g. How do their landing times compare?

For 12000 points

They are the same

Sphere A is projected off the edge of a 1.0 m high bench with a horizontal velocity of 2.0 m/s. Sphere B is dropped from the same height as Sphere A. Both spheres have the same size and mass. How do their landing times and velocities compare?

For 3000 points

They are the same.

A truck is moving at constant speed. Inside the storage compartment, a rock is dropped from the midpoint of the ceiling and strikes the floor below. Does it strike the floor behind where it was dropped, in front of where it was dropped, or directly below?

For 8000 points

directly below

A diver running at 3.6 m/s dives out horizontally from the edge of a 31 m high cliff. How far from the base of the cliff does the

diver hit the water?

For 6000 points

9 m

What happens to the acceleration of the object when it changes from

the picture on the right to the picture on the left?

For 30000 points

the acceleration increases

What happens to the acceleration of the object when it changes from

the picture on the right to the picture on the left?

For 800 points

It does not change.

How does the average velocity for objects A and B compare for the

time interval 0 to 5 seconds?

For 8000 points

A = B

How does the instantaneous velocity for A and B compare at t =

5 s?

For 5000 points

A > B

How does the acceleration of object A compare to the acceleration of

object B at t = 5 s?

For 4000 points

Acceleration of B > A

How does the displacement of A compare to B at t = 5 s?

For 40000 points

A = B

How does the average velocity for objects A and B compare for the

time interval from 0 to 5 s?

For 20000 points

A = B

How does the instantaneous velocity of objects A and B

compare at t = 5 s?

For 50000 points

A > B

Draw the velocity vs. time graphs for the following position vs. time

graphs

For 12000 points