a person on roller skates stands next to a wall and pushes the wall with a force of 25 N.if the person has a mass of 50 kg what is the acceleration?
a. zero
b. 0.5 m/s/s
c. 2 m/s/s
d. 4 m/s/s
They are asking for the acceleration of the skater, not that of the wall (which does not move).
F = 25 N is applied TO the skater by the wall, and there are no other significant horizontal forces applied to her, because the skates eliminate friction.
Use F = m a to compute her acceleration, a. m = 50 kg
a = F/m = ?
The answer is one of the choices
the answer is b.0.5 m/s/s.
To find the acceleration of the person, we can use Newton's second law of motion, which states that the acceleration of an object is directly proportional to the net force applied to it and inversely proportional to its mass.
The formula for acceleration is:
acceleration = net force / mass
In this case, the net force exerted on the person is 25 N and their mass is 50 kg.
So, to find the acceleration, we divide the net force by the mass:
acceleration = 25 N / 50 kg
Simplifying this, we have:
acceleration = 0.5 m/s²
Therefore, the correct answer is b. 0.5 m/s².