Answer:
7 seconds
Explanation:
he went down -28 m/s so 7 times -4 equals -28 m/s which is what he needed to slowness down to 10 m/s
Answer:
The 5.53 moles of virus in an oil tanker.
Explanation:
Given:
Mass of virus mg
Mass of oil kg
From the formula of moles,
Moles of viruses is given by,
Mass of 1 oil tanker divide by mass of 1 mole of virus,
Therefore, the 5.53 moles of virus in an oil tanker.
Answer:
(4) The particle travels with a constant velocity until t0 and then comes to rest.
Explanation:
Uniform rectilinear motion is defined as the motion of a particle in a straight line with constant velocity, that is, there is no change in velocity over time.
And this can be determined by means of the following equation:
where:
x = final point [m]
xo = initial point [m]
v = velocity (slope) [m/s]
t = final time [s]
to = initial time [s]
So the slope in the graph gives the constant velocity
Therefore, after the time to there is no displacement, that is the particle comes to rest.