How to solve the Momentum of a baseball?

In summary, the momentum of a baseball is calculated by multiplying its mass by its velocity. The equation for momentum is p = mv, where p is momentum, m is mass, and v is velocity. The unit for momentum is kg*m/s. To find the momentum of a baseball moving at a speed of 90 miles per hour, we first convert the speed to meters per second. 90 miles per hour is approximately 40.23 meters per second. Then, we use the momentum equation (p = mv) and the average mass of a baseball (0.145 kg) to calculate the momentum to be 5.82 kg*m/s. The size of a baseball does affect its momentum, as the larger the mass of the
  • #1
mgomez
1
0
Question is:
A .145kg baseball is thrown at 40 m/s (~89.5mph). What is the momentum of the baseball?
Enter units of momentum as kg m/s

I have used the following solutions for the question, but the answer I'm submitting is coming back wrong.

I have entered:
116 J
5.8 kgm/s

The formula I used to solve the question is p=mv p=(.145kg)(40m/s) = 5.8
Please help...
 
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  • #2
Welcome to PF;
Try: "5.8 kg m/s"
 

1. How is momentum calculated for a baseball?

The momentum of a baseball is calculated by multiplying its mass by its velocity. The equation for momentum is p = mv, where p is momentum, m is mass, and v is velocity. The unit for momentum is kg*m/s.

2. What is the momentum of a baseball moving at a speed of 90 miles per hour?

To find the momentum of a baseball moving at a speed of 90 miles per hour, we first convert the speed to meters per second. 90 miles per hour is approximately 40.23 meters per second. Then, we use the momentum equation (p = mv) and the average mass of a baseball (0.145 kg) to calculate the momentum to be 5.82 kg*m/s.

3. Does the size of a baseball affect its momentum?

Yes, the size of a baseball does affect its momentum. The larger the mass of the baseball, the greater its momentum will be. This is because momentum is directly proportional to mass in the momentum equation (p = mv).

4. How does air resistance affect the momentum of a baseball?

Air resistance, also known as drag, can decrease the momentum of a baseball. As the ball moves through the air, it experiences a force in the opposite direction of its motion due to air resistance. This force can decrease the velocity of the ball, and therefore decrease its momentum.

5. Can the momentum of a baseball be changed?

Yes, the momentum of a baseball can be changed. This can be done by changing the velocity or mass of the ball. For example, if a pitcher throws a baseball with a greater velocity, the momentum of the ball will increase. Additionally, if a heavier baseball is used, the momentum will also increase.

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