1 of 10
1 answer:
You might be interested in
Answer:
The time of oil tanker will be 80 sec.
Explanation:
Given that,
He walks at 3 km/hour.
If the container ship is 100 m long, and travelling at 12 km/hour.
The distance will be 200 m.
We need to calculate the relative velocity
Using formula of relative velocity
Put the value into the formula
The distance is 200 m.
We need to calculate the time
Using formula of time
Put the value into the formula
Hence, The time of oil tanker will be 80 sec.
Answer:
- <u>See the picture attached with the drawing of the forces.</u>
Explanation:
Find the figures with the question and the answer attached.
The answer shows the free body diagram with four arrows starting on, and pointing way from, the dot.
The red vertical upward arrow, labeled , represents the normal force, which is the force exerted by the ground on the cart.
The red vertical downward arrow, labeled , represents the gravity force (weight), which is the pull that the Earth exerts of the cart.
Both vertical arrows are of the same side because the normal force and the weight are balanced (since there is not vertical acceleration).
The blue horizontal arrow pointing to the right, labeled , represents the horizontal pulling force exerted by the hand.
The blue horizontal arrow pointing to the left, labeled , represents the frictional force which is not neglicible.
Since the cart is accelerating in the positive direction, toward the right,
and the arrow to the right is larger than the arrow to the left.
