Question 5. A tennis ball that has a mass of 5.7 x 102 kg is travelling at a velocity of 35.0 m/s, south. when it collides with a concrete wall. The ball is in contact with the wall for a time of 4.0 x 10³ s. Immediately after the collision, the tennis ball is travelling at a velocity of 32 m/s, north. The magnitude of the average force exerted on the tennis ball by the wall, expressed in scientific notation, is a.b x 10te N. The values of a and b, the sign of the exponent, and the value of c are , and b + or - C

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Chapter1: Units, Trigonometry. And Vectors
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Question 5.
Y
A tennis ball that has a mass of 5.7 x 102 kg is travelling at a velocity of 35.0 m/s, south,
when it collides with a concrete wall. The ball is in contact with the wall for a time of
4.0 × 10³ s. Immediately after the collision, the tennis ball is travelling at a velocity of
32 m/s, north.
The magnitude of the average force exerted on the tennis ball by the wall, expressed in
scientific notation, is a.b × 10¹ N. The values of a and b, the sign of the exponent,
and the value of care
and
b
+ or -
Transcribed Image Text:Question 5. Y A tennis ball that has a mass of 5.7 x 102 kg is travelling at a velocity of 35.0 m/s, south, when it collides with a concrete wall. The ball is in contact with the wall for a time of 4.0 × 10³ s. Immediately after the collision, the tennis ball is travelling at a velocity of 32 m/s, north. The magnitude of the average force exerted on the tennis ball by the wall, expressed in scientific notation, is a.b × 10¹ N. The values of a and b, the sign of the exponent, and the value of care and b + or -
Expert Solution
Step 1

Acceleration is defined as the rate of change of velocity.

While solving the question we will consider the north direction as positive and the south as negative.

Givens:

  • Initial velocity, u=-35.0 m/s (south).
  • Final velocity, v=+32 m/s (north).
  • Time, t=4.0x10-3 s.
  • Mass of the ball, m=5.7x10-2 kg.

Require:

  • Force, F=?
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