Answer:
2.5m/s²
Force = mass x acceleration
Explanation:
Given parameters
Mass = 200kg
Force = 500N
Unknown:
Acceleration = ?
Solution:
According to the Newton's second law of motion "the constant force applied on a massive body causes it to accelerate".
Mathematically;
Force = mass x acceleration
Now insert the parameters and solve;
Acceleration =
Acceleration = = 2.5m/s²
Answer:
Energy converted =
Explanation:
Recall that Power is the rate at which energy is transferred therefore defined by the mathematical formula:
Since the information on the power of the runner is given, as well as the time the energy conversion takes place, we can then use this equation to find how much energy is been converted. Notice that we just need to change the given time *10 minutes) into the appropriate units (seconds)to get the answer in SI units of energy (Joules). The conversion of 10 minutes into seconds is done by multiplying : 10 minutes * 60 seconds/minute = 600 seconds.
We use this then to find the energy converted by the runner: