Q1 a pole-vaulter of mass 584 kg vaults to a height of 577, Ask an Expert

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Q1) A pole-vaulter of mass 58.4 kg vaults to a height of 5.77 m before dropping to thick padding placed below to cushion her fall. Find the speed with which she lands.

If the padding brings her to a stop in a time of 0.505 s, what is the average force on her body due to the padding during that time interval?

Q2. Inexperienced catcher catches a 129 km/h fastball of mass 138 g within 1.02 ms, whereas an experienced catcher slightly retracts his hand during the catch, extending the stopping time to 10.2 ms. What is the average force imparted to the two gloved hands during the catches of the inexperienced catcher?

What is the average force imparted to the two gloved hands during the catches of the experienced catcher?

Q3. Particle A has a mass of 4.90 g and particle B has a mass of 1.16 g. Particle A is located at the origin and particle B is at the point (x, y) = (24.4 cm, 0). What is the location of the CM? Enter xcmfirst, then ycm.

Q4. Block of wood of mass 0.617 kg is initially at rest. A bullet of mass 0.0582 kg traveling at 118 m/s strikes the block and becomes embedded in it. With what speed do the block of wood and the bullet move just after the collision?

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Category:- Physics
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