Answer:
C. 180 N
Explanation:
= mass of the blocking sled = 60 kg
= Coefficient of kinetic friction = 0.30
= kinetic frictional force acting on the sled
kinetic frictional force acting on the sled is given as

=Force applied
For the sled to move at constant speed, the applied force must be same as the frictional force

F = ma (force = mass x acceleration)
So the car’s mass affects the amount of force, changing how it would roll down a ramp, I think.
Answer: all the above options are correct.
Explanation:
In sidewall markings,the load index is given as a letter,traction and temperature ratings are based on the speed rating of the tire,the tire's recommended inflation pressure and load are indicated and the DOT code indicates when and where the tire was made.
Answer:
0.66 s
Explanation:
∆x = v∆t → 2 × 115 = 350 ∆t → ∆t = 230/350 = 0.66 s