Question

1.You step onto a hot beach with your bare feet. A nerve impulse, generated in your foot, travels through your nervous system at an average speed of 188 m/s. How much time does it take for the impulse, which travels a distance of 1.80 m, to reach your brain?

2. (a) Suppose that a NASCAR race car is moving to the right with a constant velocity of +91 m/s. What is the average acceleration of the car? (b) Twelve seconds later, the car is halfway around the track and traveling in the opposite direction with the same speed. What is the average acceleration of the car?

3.For a standard production car, the highest road-tested acceleration ever reported occurred in 1993, when a Ford RS200 Evolution went from zero to 26.8 m/s (60 mi/h) in 2.732 s. Find the magnitude of the car's acceleration.

Answer 1

1.

speed = distance / time

so,

time = distance / speed

t = 1.8 / 188 = 0.0096 seconds Answer