Floofi
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REALLY NEED HELP, DUE TODAY!!!

1. How will an object at rest be affected if multiple forces working on it are opposed but unbalanced?

Motion will either be created, stopped, or changed.

The acceleration of the object will increase

The unbalanced forces will cause the object to produce a humming sound

The mass of the object will decrease.

2. A blue car weighing 1,302 kg is accelerating forward at a rate of 4 m/s2. What is the forward force of the car?

325.5 N

1,298 N

1,306 N

5,208 N

3. Two people collide on a busy city street. What information is needed to calculate the force one of the people exerts on the other person?

The velocity of each person

The speed of each person

The mass and acceleration of each person

The location of the collision

4. (don't need)

5. Two bowling balls of different masses collide while accelerating at 1.875 m/s2. The first ball, rolling to the right, weighs 7 kg. The second ball, rolling to the left, weighs 4 kg. What force does the bowling ball weighing 7 kg exert on the bowling ball weighing 4 kg?

8.875 N to the right

3.73 N to the left

7.5 N to the left

13.125 N to the right

Respuesta :

payal9

Answer:

1.An object at rest has zero velocity - and (in the absence of an unbalanced force) will remain with a zero velocity. Such an object will not change its state of motion (i.e., velocity) unless acted upon by an unbalanced force.

3.Let speed of balls are v

1

and v

2

.

There is no external force acting, momentum will be conserved.

m

1

u

1

+m

2

u

2

=m

1

v

1

+m

2

v

2

⇒m×6−m×6=mv

1

+mv

2

⇒v

1

=−v

2

Coefficient , e=−

u

1

−u

2

v

1

−v

2

⇒

3

1

=−

6+6

v

1

−v

2

⇒v

1

=−2m/sWhen two objects with the same mass collide, Newton's laws tell us that they will accelerate the same amount but in opposite directions.

celumusakhumbulani

Answer:

1. The acceleration of the object will increase.

2. 5 208

3. The mass and the acceleration of each person

5. 13.125

Explanation:

2,3and4 all uses the formula f = ma (force equals mass × acceleration)

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