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antiseptic1488 [7]
3 years ago
11

PLEASE HELP ME , it’s my exam

Physics
1 answer:
tatyana61 [14]3 years ago
5 0

Answer:

I only know how to answer 22

which is 250 J

Explanation:

KE: 1/2 mv^2

m- 5kg

v- 10 m/s

KE: 1/2 × 5 × 10^2

= 250 J

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Since, K is the constant for a particular spring, we need to change the mass of the cart to change the time period.

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