Answer:
Force, F = 2714.33 N
Explanation:
It is given that,
Diameter of the circular tip, d = 1.2 mm = 0.0012 m
Radius, r = 0.0006 m
Pressure acting on the hammer, 
Let F is the force exerted on a nail. It can be calculated using the definition of pressure exerted. Its formula is given by :



F = 2714.33 N
So, the force exerted on a nail 2714.33 N. Hence, this is the required solution.
1.Velocity (v) is a vector quantity that measures displacement (or change in position, Δs) over the change in time (Δt), represented by the equation v = Δs/Δt. Speed (or rate, r) is a scalar quantity that measures the distance traveled (d) over the change in time (Δt), represented by the equation r = d/Δt.
Correct me if I’m wrong but I think it’s A
Explanation:
Runner A has already reached about 50m in around 5s.
Hint: The North American Plate and Eurasian Plate are moving away from each other.