Sagot :
Answer:
The mass of the skateboard rolling at a velocity of 3 m/s with a momentum of 6 kg-m/s is 2 kg.
Explanation:
Momentum is measuring a mass in a motion.
The formula for momentum is:
p=mv
where:
p is the momentum and its unit is in kg-m/s
m is the mass of the object and its unit is in kg
v is the velocity of the object and its unit is in m/s
The given data are the following:
p = 6.0 kg.m/s
v= 3.0 m/s
m=?
Solving for the mass of the skateboard:
By substituting the given data to momentum formula, we get:
p = mv
6.0 kg.m /s = m (3.0 m/s)
Dividing both side of the equation by 3.0 m/s, we get:
m = 6.0 kg.m/s / 3.0 m/s
By cancelling m/s , what is left is:
2kg
Therefore, the mass of the skateboard is . 2kg