Physics for Scientists and Engineers
6th Edition
ISBN: 9781429281843
Author: Tipler
Publisher: MAC HIGHER
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Chapter 5, Problem 69P
To determine
The distance covered by
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A 1.5-kg fireworks shell is fired at an angle of 19∘19∘ from the vertical from a mortar and reaches a height of 39 m39 m. Take the upward direction to be positive for this problem.
a.) Neglecting air resistance (a poor assumption, but we will make it for this problem), calculate the the magnitude of the shell's initial velocity, in meters per second, when it leaves the mortar.
b.) The mortar is a tube that has length L=0.425m. Calculate the average acceleration of the shell, in meters per second squared, in the tube as it is propelled from rest to the speed found in part (a).
c.) What is the average net force, in newtons, acting on the shell in the mortar?
e.g. A wood block mB is static on smooth table with another
block MA on one ends of it. Now give m an initial velocity
vo to make it sliding on B. assume the friction coefficient is
μ, m₁=m³, and when A arrives at the other end of B, they
have the same speed. What is the length of B and the
displacement of B (A is a mass point)..
Execute
A
A gives B a friction um g and B
gives A a friction -µmäg.
Frictions are internal force, so
momentum is conserved for the
whole system. Assume the
velocity is v when A gets right
end.
B
(a)
(b)
B
12
What is the use of the photogate timer?
Select one:
O To measure the acceleration.
O To measure the position.
O To reduce the friction.
O To measure the change in speed.
O To measure the time.
What is the use of air pump?
Select one:
To measure the speed.
O To measure the distance.
O To record the motion of the glider.
O To measure the position.
O To reduce the friction
Chapter 5 Solutions
Physics for Scientists and Engineers
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