Question

- A rock was launched vertically upward at a speed of
**100 m/s**, and after some time the rock had fallen on the launch pad. What was the total time elapsed? What was the maximum height reached by the rock?

Answer #1

1. A body is launched upward at 30 m/s. After how much time is
the object moving with half the initial speed, but in the downward
direction to the nearest hundredth of a second?
2. A girl launches a ball straight up into the air on Earth. The
average velocity of the ball from launch point until it attains its
maximum height is 24 m/s. Ignore air resistance.
What is the maximum height above the launch point to the nearest...

A model rocket is launched straight upward with an initial speed
of 59.0 m/s. It accelerates with a constant upward acceleration of
2.50 m/s2 until its engines stop at an altitude of 160
m.
(a) What can you say about the motion of the rocket after its
engines stop?
(b) What is the maximum height reached by the rocket?
(c) How long after liftoff does the rocket reach its maximum
height?
(d) How long is the rocket in the air?

Using your trusty sling-shot, you fire a 3.00-N rock vertically
into the air. You observe that when the rock is 15.5 m above where
you launched it, it is traveling at 24.9 m/s upward.
A. Use energy concepts to determine the launch speed of the
rock.
B. Use energy concepts to find the rock's maximum height.

A stone is thrown vertically upward at a speed of 35.30 m/s at
time t=0. A second stone is thrown upward with the same speed 1.900
seconds later. At what time are the two stones at the same
height?What is the downward speed of the first stone as they pass
each other

A rocket is launched vertically upward from Earth's surface at a
speed of 5.0 km/s .
What is its maximum altitude? in meters using two significant
figures

A stone is thrown vertically upward at a speed of 39.30 m/s at
time t=0. A second stone is thrown upward with the same speed 1.690
seconds later. At what time are the two stones at the same
height?
At what height do the two stones pass each other?
What is the downward speed of the first stone as they pass each
other?

A rocket blasts off vertically from rest on the launch pad with
a constant upward acceleration of 2.30 m/s2 . At 20.0 s after
blastoff, the engines suddenly fail, and the rocket begins free
fall.
How long after it was launched will the rocket fall back to the
launch pad?

A fireworks rocket is launched vertically upward, and explodes
into two equal-mass pieces at the top of its trajectory. The pieces
hit the ground 3.37 s and 5.62 seconds after the explosion.
What was the rockt's launch speed?

A 0.26-kg rock is thrown vertically upward from the top of a
cliff that is 30 m high. When it hits the ground at the base of the
cliff, the rock has a speed of 31 m/s . You may want to review
(Pages 234 - 241) .A 0.26-kg rock is thrown vertically upward from
the top of a cliff that is 30 m high. When it hits the ground at
the base of the cliff, the rock has a...

A ball is thrown vertically upward with a speed of 25.0 m/s from
a height of 30 m from the ground.
How high does it rise from the ground?
How long does it take to reach the maximum height from the point
of projection?
How long does it take to reach to the ground?

ADVERTISEMENT

Get Answers For Free

Most questions answered within 1 hours.

ADVERTISEMENT

asked 3 minutes ago

asked 11 minutes ago

asked 12 minutes ago

asked 28 minutes ago

asked 1 hour ago

asked 1 hour ago

asked 1 hour ago

asked 1 hour ago

asked 1 hour ago

asked 2 hours ago

asked 2 hours ago

asked 2 hours ago