Four movers pick up boxes. Each box has a different mass, and each mover applies a different amount of force to lift the box. Which box will have the greatest acceleration? (1 point)

Question

• a 10 kg box lifted with 60 N of force
• a 20 kg box lifted with 40 N of force
O a 20 kg box lifted with 60 N of force
a 10 kg box lifted with 40 N of force

Answer 1

We can determine the acceleration of each box using the formula:

Acceleration = Force / Mass

For the 10 kg box lifted with 60 N of force, the acceleration would be:
Acceleration = 60 N / 10 kg = 6 m/s^2

For the 20 kg box lifted with 40 N of force, the acceleration would be:
Acceleration = 40 N / 20 kg = 2 m/s^2

For the 20 kg box lifted with 60 N of force, the acceleration would be:
Acceleration = 60 N / 20 kg = 3 m/s^2

For the 10 kg box lifted with 40 N of force, the acceleration would be:
Acceleration = 40 N / 10 kg = 4 m/s^2

Therefore, the box with the greatest acceleration is the 10 kg box lifted with 60 N of force.

Answer 2

A baseball has a mass of 145 g. A pitcher throws the baseball so that it accelerates at a rate of 80 m/s?. How much force did the pitcher apply to the baseball? (1 point)
O 11.6 N
• 65 N
• 1.8 N
• 0.6 N

Answer 3

We can use the formula:

Force = mass * acceleration

First, let's convert the mass of the baseball from grams to kilograms:
145 g = 0.145 kg

Now we can calculate the force:
Force = 0.145 kg * 80 m/s^2 = 11.6 N

Therefore, the pitcher applied a force of 11.6 N to the baseball.

Answer 4

Which situation describes a negative acceleration? (1 point)
• a swimmer moving at a constant velocity
O a runner slowing down at the end of a race
a diver jumping off a diving board and falling to the swimming pool below
a bicycle increasing its velocity as the rider pedals harder

Answer 5

A runner slowing down at the end of a race describes a negative acceleration.