1. A bat hits a moving baseball. If thebat delivers a net eastward impulse of 0.
ID: 1722194 • Letter: 1
Question
1. A bat hits a moving baseball. If thebat delivers a net eastward impulse of 0.8 N-s and the ball startswith an initial horizontal velocity of 3.8 m/s to the west andleaves with a 5.7 m/s velocity to the east, what is the mass of theball (in grams)?2. The force sensor measures the force on the sensor due tothe bumper, but the cart's momentum change arises from the force onthe cart due to the bumper. Which of the following facts are neededto assert that the magnitude of these two forces are nearly equalat all times.
A. Their magnitudes differ by the magnitude of the net force on thebumper.
B. The force of friction is small.
C. The net force on the bumper is small.
D. The cart's weight is canceled by the the normal force exerted bythe track.
1. A, B
2. A, C
3. A, D
4. B, C
5. B, D
6. C, D
7. A, B, C, D
1. A bat hits a moving baseball. If thebat delivers a net eastward impulse of 0.8 N-s and the ball startswith an initial horizontal velocity of 3.8 m/s to the west andleaves with a 5.7 m/s velocity to the east, what is the mass of theball (in grams)?
2. The force sensor measures the force on the sensor due tothe bumper, but the cart's momentum change arises from the force onthe cart due to the bumper. Which of the following facts are neededto assert that the magnitude of these two forces are nearly equalat all times.
A. Their magnitudes differ by the magnitude of the net force on thebumper.
B. The force of friction is small.
C. The net force on the bumper is small.
D. The cart's weight is canceled by the the normal force exerted bythe track.
1. A, B
2. A, C
3. A, D
4. B, C
5. B, D
6. C, D
7. A, B, C, D
Explanation / Answer
. F* t = 0.8 N - s . Initial velocity (v1 ) = - 3.8 m /s ( since it is in Westdirection ) . Final velocity (v2 ) = 5.7 m/s ( since it is in East direction) . We know that : . F * t = m ( v2 - v1 ) . or m = ( F * t ) / ( v2 - v1 ) = 0.8 / ( 5.7 - (- 3.8) ) = 0.0842 kg = 8.42 * 10-2 kg . (b) Which of the following facts are needed toassert that the magnitude of these two forces are nearly equal atall times. . A. Their magnitudesdiffer by the magnitude of the net force on thebumper. . B. The force of friction issmall. . Hope thishelps u!Related Questions
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