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3 years ago

MathPhys Help pls Tysm

Physics

2 answers:

andrew-mc [135]3 years ago

7 0

Answer:

8.75

Explanation:

HACTEHA [7]3 years ago

3 0

Answer:

8.75

Explanation:

First, find the force of friction.

Kinetic energy = work done by friction

½ mv² = Fd

½ (3.9 kg) (2.9 m/s)² = F (1.4 m)

F = 11.7 N

Next, find the distance at the new velocity.

Kinetic energy = work done by friction

½ mv² = Fd

½ (3.9 kg) (2.5 × 2.9 m/s)² = (11.7 N) d

d = 8.75 m

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