A projectile is fired at a height of 1.5 m above the ground with an initial velocity of 100 m/sec and at an angle of 30 ° above the horizontal. Use this information to answer the following questions: 186. Given r ( t ) = t 2 i + 2 t j and t = 1 . find the tangential and normal components of acceleration.
A projectile is fired at a height of 1.5 m above the ground with an initial velocity of 100 m/sec and at an angle of 30 ° above the horizontal. Use this information to answer the following questions: 186. Given r ( t ) = t 2 i + 2 t j and t = 1 . find the tangential and normal components of acceleration.
A projectile is fired at a height of
1.5
m
above the ground with an initial velocity of
100
m/sec
and at an angle of
30
°
above the horizontal. Use this information to answer the following questions:
186. Given
r
(
t
)
=
t
2
i
+
2
t
j
and
t
=
1
. find the tangential and normal components of acceleration.
A sky diver weighing 192 lb (including equipment) falls vertically downward from a very high altitude. Assume that the air resistance is proportional to the falling velocity with the constant k = 0.6, the acceleration due to gravity g = 32ft/sec2, and that the positive direction is downward.
What is the terminal velocity of the sky diver if he/she never opens the parachute?
An electron moves with a constant horizontal velocity of 3.0 x 100 m/s and no initial vertical velocity as it enters a deflector inside a TV tube. The electron strikes the screen after traveling
17.0 cm horizontally and 40.0 cm vertically upward with no horizontal acceleration. What is the constant vertical acceleration provided by the deflector? (The effects of gravity can be ignored.)
1.4 x 10 m/s?
14
2.5 x 10 m/s2
14
1.2 x 10 m/s?
8.3 x 10 m/s?
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