The figure below shows a bullet of mass 80 g traveling horizontally towards the east with speed 450 m/s, which strikes a block of mass 2.5 kg that is initially at rest on a frictionless table. After striking the block, the bullet is embedded in the block and the block and the bullet move together as one unit. a. What is the speed of the block/bullet combination immediately after the impact? Hints The speed of the combination is m/s. b. What is the magnitude and direction of the impulse by the block on the bullet? Hints The block exerts an impulse of Nċs on the bullet Select an answer c. What is the magnitude and direction of the impulse from the bullet on the block? The bullet exerts an impulse of Nċs on the block Select an answer
The figure below shows a bullet of mass 80 g traveling horizontally towards the east with speed 450 m/s, which strikes a block of mass 2.5 kg that is initially at rest on a frictionless table. After striking the block, the bullet is embedded in the block and the block and the bullet move together as one unit. a. What is the speed of the block/bullet combination immediately after the impact? Hints The speed of the combination is m/s. b. What is the magnitude and direction of the impulse by the block on the bullet? Hints The block exerts an impulse of Nċs on the bullet Select an answer c. What is the magnitude and direction of the impulse from the bullet on the block? The bullet exerts an impulse of Nċs on the block Select an answer
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Transcribed Image Text:The figure below shows a bullet of mass 80 g traveling horizontally towards the east with speed 450 m/s,
which strikes a block of mass 2.5 kg that is initially at rest on a frictionless table.
After striking the block, the bullet is embedded in the block and the block and the bullet move together as
one unit.
a. What is the speed of the block/bullet combination immediately after the impact? Hints
The speed of the combination is
m/s.
b. What is the magnitude and direction of the impulse by the block on the bullet? Hints
The block exerts an impulse of
Nċs on the bullet Select an answer
c. What is the magnitude and direction of the impulse from the bullet on the block?
The bullet exerts an impulse of
d. If it took 3 ms for the bullet to change the speed from 450 m/s to the final speed after impact, what is
the average force between the block and the bullet during this time?
Hints
Nċs on the block Select an answer .
The magnitude of the average force is
N.
e. Of the kinetic energy initially present in the bullet, what percentage still remains as kinetic energy of
the block/bullet? Hints
Of the original kinetic energy,
% remains as kinetic energy of the block/bullet.
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