PHYSICS HIGH SCHOOL

What is the kinetic energy of a toy truck with a mass of 0.75 kg and a velocity of 4 m/s? (Formula: )

Answers

Answer 1
Answer: The answer is 6 Joules. The kinetic energy (KE) of an object is the product of half of the mass (m) of the object and the square of its velocity (v²): KE = 1/2m*v². We know that m = 0.75 kg and that v = 4 m/s. Therefore, KE = 1/2 * 0.75 kg * (4 m/s)² = 1/2 * 0.75 kg * 16 m²/s² = 6 kg*m²/s² = 6 J.
Answer 2
Answer:

Answer:

6J

Explanation:

jus took the test :)

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Please help with number 5

Answers

the answer would be 3n to the right because 7-4=3 and the 5-5, so they cancel out.

Which of the following scenarios would cause a sound to stop being produced?A. A molecule moves through its normal position to the opposite side of its normal position.
B. A molecule moves in the same direction as a wave.
C. The vibration results in a molecule moving vertically.
D. The vibration of the point in the medium ends.

Answers

The scenario that would cause a sound to stop being produced is when a molecule moves through its normal position to the opposite side of its normal position. The answer is letter A. This is also known as destructive interference.
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What activities can you do on Jupiter?!

Answers

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An explosion occurs 340 km away. Given that sound travels at 340 m/s, the time the sound takes to reach you is a. 1 s.
b. 10 s.
c. 100 s.
d. 200 s.
e. more than 200 s.

Answers


(340,000 meters) / (340 meters/sec)  =  1,000 seconds

That's more than 200 sec.
first convert 340km into 340,000m, and 340000/340=1000. So the answer is e.

If velocity decreases, mass increases or decreases?

Answers

If the velocity decreases, increases. This situation is based about the momentum of a body where it is equal to mass times velocity. Velocity is inversely proportional to mass. That is why mass increases if velocity decreases.

Car design features that is intended to increase friction when cornering or stopping?

Answers

Answer: tyre made out of rubber, tread pattern on wheels

Explanation:

the material of rubber generally grips better than other materials whilst still allows the car to move smoothly

tread patterns are essential on all tires as it increases the traction between the wheels and the road which increases the friction
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