Question

mike tyson's punch starts from rest and accelerates uniformly at 100 m/s^2 while moving 50 cm. the speed of his hand immediately before landing on his opponent's jaw is

Answer #1

A 1.50 ✕ 103-kg car starts from rest and accelerates
uniformly to 16.0 m/s in 12.9 s. Assume that air resistance remains
constant at 400 N during this time.
(a) Find the average power developed by the engine.
____ hp
(b) Find the instantaneous power output of the engine at t
= 12.9 s, just before the car stops accelerating.
______ hp

A 1.50 ✕ 103-kg car starts from rest and accelerates
uniformly to 15.1 m/s in 12.7 s. Assume that air resistance remains
constant at 400 N during this time.
(a) Find the average power developed by the engine. (hp)
(b) Find the instantaneous power output of the engine at t
= 12.7 s, just before the car stops accelerating. (hp)

A car accelerates uniformly from rest and reaches a speed of
21.0 m/s in 9.05 s. Assume the diameter of a tire is 59.0 cm.
(a) Find the number of revolutions the tire makes during this
motion, assuming that no slipping occurs.
rev
(b) What is the final angular speed of a tire in revolutions per
second?
rev/s

a) A car accelerates uniformly from rest and reaches a speed of
13.7 m/s in 10.9 s. The diameter of a tire is 71.8 cm. Find the
number of revolutions the tire makes during this motion, assuming
no slipping. Answer in units of rev.
b) What is final rotational speed of a tire? Answer in units of
rev/s.

A merry-go-round starts from rest and accelerates uniformly over
19.5 s to a final angular velocity of 6.25 rev/min.
(a) Find the maximum linear speed of a person sitting on the
merry-go-round 4.00 m from the center.
(b) Find the person's maximum radial acceleration.
(c) Find the angular acceleration of the merry-go-round.
(d) Find the person's tangential acceleration.

A merry-go-round starts from rest and accelerates uniformly over
26.5 s to a final angular velocity of 6.90 rev/min.
(a) Find the maximum linear speed of a person sitting on the
merry-go-round 7.25 m from the center.
(b) Find the person's maximum radial acceleration.
(c) Find the angular acceleration of the merry-go-round.
(d) Find the person's tangential acceleration.

A 3.00 kg block starts from rest at the top of a 30° incline and
accelerates uniformly down the incline, moving 1.83 m in 1.80
s.
(a) Find the magnitude of the acceleration of the block.
m/s2
(b) Find the coefficient of kinetic friction between the block
and the incline.
(c) Find the magnitude of the frictional force acting on the
block. N
(d) Find the speed of the block after it has slid a distance
1.83 m. m/s

A car starts from rest at a stop sign. It accelerates at 3.6
m/s^2 for 6.5 s, coasts for 1.7 s, and then slows down at a rate of
2.5 m/s^2 for the next stop sign.
How far apart are the stop signs?

1 point) A truck starts from rest and accelerates at
1?/?2. 6 s later, a car accelerates from rest at the
same starting point with an acceleration of
2.7?/?2.
a) Where and when does the car catch the truck?
1. ?m from the starting point
2. at ? seconds from the moment the truck started to
accelerate.
b) What are their velocities when they meet?
The truck : m/s
The car : m/s

A speedboat starts from rest and accelerates at +2.01 m/s2 for
7.25 s. At the end of this time, the boat continues for an
additional 5.90 s with an acceleration of +0.518 m/s2. Following
this, the boat accelerates at -1.49 m/s2 for 7.85 s.
(a) What is the velocity of the boat at t = 21 s? ____m/s
(b) Find the total displacement of the boat. ____m

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