Answer:
Push with force of 1N
Explanation:
I have explained in the paper.
Goodluck
Answer:
The answer is A
Explanation:
A large risk of tailgating is the collision avoidance time being much less than the driver reaction time. Driving instructors advocate that drivers always use the "two-second rule" regardless of speed or the type of road. During adverse weather, downhill slopes, or hazardous conditions such as black ice, it is important to maintain an even greater distance.
Part a)
kinetic energy of the hammer will be

here we know that
m = 4 kg
v = 6 m/s
now by the equation of kinetic energy we have


Part b)
for finding the force we will have

here we know that



now from above equation we have


now by Newton's II law we have


so it requires 720 N.
When the property of the medium changes.
Explanation:
Wheelchair ramp
An inclined plane, also known as a ramp, is a flat supporting surface tilted at an angle, with one end higher than the other, used as an aid for raising or lowering a load.