Answer:

Explanation:
Taking summation of force at perpendicular to the plane




Taking summation along the plane, therefore we have


from equation 1 and 2 we have





Newton's 3rd law of motion says that for every action there is an equal and opposite reaction.
This means that the smaller mass exerts a force on the larger mass that is equal in magnitude and opposite in direction to the force that the larger mass exerts on the smaller mass.
Choice 2
3 times 6= 18. The average speed is 19 mph.
hope this helps!
Measuring the heat of chemical reactions or physical changes.
Yes I can help jus tell me what the 26th question is