Hope these r correct:
Normal Force≈ 68.5
Frictional Force≈ 20.5
Accel. ≈ 58.5
These are rounded
Answer:
Wellll. I am assuming the direction of speed is in the same direction as the direction of displacement of the train. (i.e. Velocity is positive)
Acceleration is defined as the rate of change of velocity with respect to time (m^s-2)
Explanation:
The number of radians (d) that the wheel have turned may be calculated by the equation,
d = (v1)(t) + 0.5 x a x t²
where v1 is the initial velocity, a is the acceleration, and t is time. Substituting the known values
d = (18 rad/s)(3s) + (0.5) x (-2 rad/s²) x (3s)²
The value of d is 63 radians.
On September 2, 2013, the temperature record at El Azizia, Libya (58° C) was disqualified. Therefore, the highest temperature recorded on the surface of the earth was recorded in 1913 at Death Valley, California. The mercury climbed to 56.7° C.