1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Natalka [10]
3 years ago
13

g John is walking along a trail when he comes to the bottom of a steep cliff. Before trying to climb up it, he wonders how high

it is. Jake happens to have a bow and arrow with him, and he knows it is able to launch an arrow with a maximum speed of 60.0 m/s. After shooting the arrow straight up with the bow fully extended, he hears it hit the ground at the top of the cliff 7.00 s after he launches it. How high is the cliff
Physics
1 answer:
s344n2d4d5 [400]3 years ago
4 0

Answer:

179.655m

Explanation:

Given

Maximum speed of the arrow v = 60m/s

Time taken to hit the top of the cliff t = 7.0s

Required

Height of the cliff H

Using the equation of motion

H = vt + 1/2gt²

Substitute into the formula:

H = 60(7) + 1/2 (-9.81)(7²) (g is negative due to upward motion of the arrow)

H = 420-4.905(49)

H = 420-240.345

H = 179.655m

Hence the cliff is 179.655m high

You might be interested in
Rgfffffffffffffffffffffffffffffffffffffffffffffffffffffff
goblinko [34]
Roygbv evjnefvvnefv ekfv k kn ke nv
5 0
2 years ago
What is relative density?​
Artemon [7]
Relative density, or specific gravity, is the ratio of the density of a substance to the density of a given reference material. Specific gravity for liquids is nearly always measured with respect to water at its densest; for gases, the reference is air at room temperature.
3 0
2 years ago
6. A dumb, bored child wants to see what will happen if they jump off the top of their shed with an umbrella. As you can guess,
ale4655 [162]

Answer:

All i kno is that that kid ain't gonna be ok

Explanation:

if u tell me how to do it ill do it

5 0
3 years ago
Tyrone, an 85-kg teenager, runs off the end of a horizontal pier and lands on a free-floating 130-kg raft that was initially at
Ghella [55]

Answer:u=4.04 m/s

Explanation:

Given

Mass m=85 kg

mass of Raft M=130 kg

velocity of raft and man  v=1.6 m/s

Let initial speed of Tyrone is u

Conserving Momentum as there is no external Force

mu=(M+m)v

85\times u=(85+130)\cdot 1.6

u=\frac{215}{85}\cdot 1.6

u=2.529\cdot 1.6=4.04 m/s  

4 0
3 years ago
WILL UPVOTE!!!Physics help please!!
liubo4ka [24]
Speed v = initial speed u + acceleration a x time t 
v=u+at = 2 + 4*3 = 14 m/s

8 0
3 years ago
Other questions:
  • Which of the following would decrease the resistance to the flow of an electric current through a body?
    9·1 answer
  • A liter is the same as a cubic meter. <br> a. True<br> b. False
    12·2 answers
  • A driver in a car traveling at a speed of 21.8 m/s sees a cat 101m away on the road. How long will it take for the car to accele
    7·1 answer
  • A single-turn circular loop of radius 14 cm is to produce a field at its center that will just cancel the earth's magnetic field
    12·1 answer
  • What is the speed of light m/s
    14·2 answers
  • Compare and contrast aerobic physical activity with anaerobic physical activity.
    12·2 answers
  • Balanced forces acting on an object
    8·1 answer
  • An object is projected straight upward with an initial speed of 25.0 m/s
    7·1 answer
  • Why the spinner of a washing machine is made to spin at a very high speed
    10·1 answer
  • What is most likely the amount of energy available at a trophic level of primary consumers if the amount of energy available to
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!