its D
i hope this helps to future test takers. i took the test and had to retake it because their wasn't an answer
kinematic equation
v=u+at
v-u=at
v-u = 1x5
the driver will have increased speed by 5 m/s. actual speeds unknown
Well, as the waves move it moves the rope as if its trying to take shape of it. Since the rope it light it will move along the ocean and the ocean will keep pushing up on the rope. (even without the waves the water is pushing the rope up so it can take its shape)
Maybe that'll help
Answer:
<em>110.7Joules</em>
Explanation:
<em>Work is said to be done when the force applied to a body cause the body to move through a distance.</em> Mathematically:
Work done = Force * Distance
Given the following
Force = 270 -0 = 270N
Distance moved = 0.410m
Required
The work done
Substitute the given parameters into the formula
Workdone = 270 * 0.41
Workdone = 110.7Joules
<em>Hence the work done in pulling the bow is 110.7Joules</em>
Answer:
v = 72 km / h
Explanation:
The definition of average speed is the distance traveled between the time interval
v = Δx / Δt
let's find the distance traveled
x = 60 + 30
x = 90 km
time spent, all time must be included, travel time and when stopped
t = 0.45 + 0.15 + 0.5+ 0.15
t = 1.25 h
we substitute in the initial equation
v = 90 / 1.25
v = 72 km / h
in going from one city to the other