Answer:
I would say A but am not sure
Answer:
20m/s
Explanation:
it covers 20 metres in a second
Answer:
A controlled variable does not change during a experiment
Explanation:
it's c
Answer:
If the force remains the same, the acceleration would decrease
Explanation:
According to Newton's second law, the acceleration of an object is given by

where
F is the force applied to the object
m is the mass of the object
As we see from the formula, the acceleration a is inversely proportional to the mass, m. Therefore, if the force F remains constant, this means that if the mass of the skateboarder increases, then the acceleration will decrease.