A 15 kg ball moving to the right at 2.0 m/s makes an elastic head-on collision with a 30 kg ball moving to the left at 1.5 m/s.
1 answer:
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Answer:
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- <u>2.26 seconds</u>
- <u>97m/s</u>
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Explanation:
1. Fall time
<u>i) Find the vertical speed of the plane when the tanks were released</u>
That is the same initial vertical speed of the tanks.
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<u>ii) Find the fall time</u>
Only the positive value has aphysical meaning: t = 2.26 seconds.
2. Speed when they hit the ground
<u>i) The horizontal speed is constant:</u>
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<u>ii) The vertical speed is:</u>
<u>iii) Total speed</u>
Given:
Mass of truck, m1 = 3200 kg
Mass of trailer, m2 = 2400 kg
acceleration = 0.45 m/s²
Let's determine the following:
(a) The tension force between the truck and the trailer.
To find the tension between the truck and the trailer, apply the formula:
Where:
Fnet is the tension between the truck and the trailer
a is the acceleration = 0.45 m/s²
m1 is the mass if the truck = 3200 kg
m2 is the mass of trailer = 2400 kg
Hence, we have:
Therefore, the tension between the truck and the trailer is 2520N
(b) The force with which the truck is pulling.
The tension between the truck and the trailer is equivalent to the force on the trailer.
thus, we have:
Therefore, the force with which the truck is pulling is 1080N.
ANSWER:
(a) 2520N
(b) 1080 N