Answer:
0.705 m/s²
Explanation:
a) The sprinter accelerates uniformly from rest and reaches a top speed of 35 km/h at the 67-m mark.
Using newton's law of motion:
v² = u² + 2as
v = final velocity = 35 km/h = 9.72 m/s, u = initial velocity = 0 km/h, s = distance = 67 m
9.72² = 0² + 2a(67)
134a = 94.484
a = 0.705 m/s²
b) The sprinter maintains this speed of 35 km/h for the next 88 meters. Therefore:
v = 35 km/h = 9.72 m/s, u = 35 km/h = 9.72 m/s, s = 88 m
v² = u² + 2as
9.72² = 9.72² + 2a(88)
176a = 9.72² - 9.72²
a = 0
c) During the last distance, the speed slows down from 35 km/h to 32 km/h.
u = 35 km/h = 9.72 m/s, v = 32 km/h = 8.89 m/s, s = 200 - (67 + 88) = 45 m
v² = u² + 2as
8.89² = 9.72² + 2a(45)
90a = 8.89² - 9.72²
90a = -15.4463
a = -0.1716 m/s²
The maximum acceleration is 0.705 m/s² which is from 0 to 67 m mark.
I think it is a because she cries when she sees them
You need to put this into a scientific calculator
Michael Faraday first discovered Electromagnetic Induction in 1830. His experiment that proved this the following: H<span>e moved a permanent magnet in and out of a coil or a single loop of wire. And it induced an </span>Electro M<span>otive </span>F<span>orce or </span>emf. In other words, the moving magnet produced a Voltage, and therefore a current. Michael Faraday’s famous law gives answer of the question of the dependence of the voltage: T<span>he magnitude of the voltage is proportional to the rate of change of the flux. It is false that the voltage can not be increased by moving a magnet towards a coil. It is increased.</span>
