To calculate the net force you ___________ all the forces acting in the same direction. Velocity net force, motion, add, opposite, acceleration,

To calculate the net force you ___________ all the forces acting in the same direction.

Velocity

net force, motion, add, opposite, acceleration,

Add

TAKS REVIEW CIRCUIT #1-50

There are always forces acting on an object. The total force acting on an

object is called the_______________.net force, motion, add, opposite,

acceleration,

If there are forces acting in ____________ directions, you subtract those forces from the

total.

Net Force


Finding the net force allows you to predict how the ________________ of an object will

change.


Opposite

Ball A – 5kgBall B – 10kgBall C – 15kgBall D – 20kg

• The balls above were all laid on a level table side by side. Which of the balls would have the greatest amount of inertia?

A IB IIC IIID IV

MOTION

Ball DA skateboarder skates down a 12 meter ramp in 1.5 seconds. How fast is the skateboarder moving?

Mr. Scopes’ class is playing tug-of-war against Mrs. Dominguez’s class. Mr.Scopes’ class is exerting 120N of force. Mrs. Dominguez’s class is exerting 125N of force. What is their net force? A. 0N; there is no motion B. 5N; in the direction of Mrs. Dominguez’s class C. 5N; in the direction of Mr. Scopes’ classD. None of the above.

8

A race car driver completes a 250 mile race in about 2 hours. What was the driver’s average speed in mph?A. 250 mphB. 500 mphC. 125 mphD. 1.25 mph

B

• All of these pictures show unbalanced forces except

C

What is the mass of a truck if it produces a force of 4200N while accelerating at a rate of 7 m/s2?

A

The track is 75 m long. If it takes a person 15 seconds to run its length, how fast were they running?

600 kg

5 m/s

50 N

C. 20g

Which of the following is not an example of acceleration?

i. When a car turns leftii. When a train speeds upiii. When a runner slows downiv. When a dog is sitting

Double the acceleration

Are the forces acting on the object balanced or unbalanced?

iv. When a dog is sitting

Lance Armstrong rides a bicycle in the Tour de France for 120 miles for 6 hours. What is his speed?

Balanced

20 mi/hA car is traveling from Houston to Miami. The trip is

1440 kilometers and takes 12 hours. What is the velocity?

120 km/h East

A street racer speeds up from 0 m/s to 20 m/s in 5seconds. What is their acceleration?

4 m/s2

A mover moves a couch that has a mass of 500 kilograms at an acceleration of 2 m/s2. How much

force is being placed on the couch?

1000 Newtons

A football player pushes another player with 50 Newtons of force for 5 meters. How much work is

the football player doing?

250 N/m

An elephant has a mass of 3500 kilograms and is being pulled by gravity at 9.8 m/s2. What is

the elephant’s force?

34,300 kg m/s2

Cars collide at an intersection. One car is coming from the right at 1000 Newtons of

force. The other is traveling from the left with 1200 Newtons of force. What is the net force?

200 N Which of Newton’s

Laws does this picture represent?


Newton’s 3rd law:Action-Reaction


The graph shows the movement of a

car over time. What is the car’s average speed?

15 km/hr

Ability of an object to resist change of motion.


INTERIA• A person biking 12 mi/hr

northwest represents speed, velocity, or acceleration?

answers• Velocity• Add• Net Force• Opposite• MOTION• Ball D• 8• B• C• A• 600 kg• 5 m/s• 50N• C. 20 kg• Double the acceleration• iv. when a dog is sitting• Balanced• 20 mi/h• 120 km hr east• 4 m/s• 1000 n• 250 n/m• 34, 300 kg m/s• 200 N • Newton’s 3rd Law action reaction• 15 km/hr• Interia

Documents

To calculate the net force you ___________ all the forces acting in the same direction. Velocity net force, motion, add, opposite, acceleration,