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
alexandr1967 [171]
3 years ago
11

Why is the answer C?

Physics
1 answer:
4vir4ik [10]3 years ago
7 0

Explanation:

We want to find the statement that is proven by the fact that the balls reach the same height.

A isn't supported by the evidence.  Balls can reach the same height without having the same initial speed.

B isn't supported by the evidence.  Balls can reach the same height without having the same launch angle.

C is supported.  Projectiles spend the same amount of time going up as they do coming down, so if two projectiles reach the same height, then they must spend the same amount of time in the air.

D isn't supported by the evidence.  Balls thrown at the same speed and complementary angles have the same range but different heights.

E isn't supported by the evidence.  The mass of the ball doesn't affect the height.

You might be interested in
With what speed must a ball be thrown directly upward so that it remains in the air for 10 seconds?
MA_775_DIABLO [31]

Answer:

◆ See the attachment photo.

◆ Don't forget to thanks

◆ Mark as brainlist.

7 0
2 years ago
A ball is accelerating down a hill. Which statement is true?
Andrew [12]

Answer:

The potential energy increases and the kinetic energy decreases

8 0
3 years ago
A ball is thrown upward with a speed of 40 m/s. Approximately how much time does it take the ball to travel from the release loc
zvonat [6]

I'm going to assume that this gripping drama takes place on planet Earth, where the acceleration of gravity is 9.8 m/s².  The solutions would be completely different if the same scenario were to play out in other places.

A ball is thrown upward with a speed of 40 m/s.  Gravity decreases its upward speed (increases its downward speed) by 9.8 m/s every second.

So, the ball reaches its highest point after (40 m/s)/(9.8 m/s²) = <em>4.08 seconds</em>. At that point, it runs out of upward gas, and begins falling.

Just like so many other aspects of life, the downward fall is an exact "mirror image" of the upward trip.  After another 4.08 seconds, the ball has returned to the height of the hand which flung it.  In total, the ball is in the air for <em>8.16 seconds</em> up and down.

4 0
3 years ago
What hot springs in the ocean floor
LuckyWell [14K]
<span>Its when lava shoots right out of the ocean floors. Known as Hydrothermal vents </span>
6 0
2 years ago
Read 2 more answers
Did the strongman pull up or push down to lift the pig
fredd [130]

Answer:

pull up???????????????

7 0
3 years ago
Other questions:
  • An is a heterogeneous mixture in which visible particles settle
    9·1 answer
  • A worker on the roof of a house drops his 0.46 kg hammer, which slides down the roof at constant speed of 9.88 m/s. The roof mak
    15·1 answer
  • The following pairs of surfaces are pushed together with the same amount of force. Between which pair of surfaces will friction
    5·2 answers
  • A box slides down a frictionless ramp.if it starts at rest, what is it’s speed at the bottom?
    10·1 answer
  • Kenna has a mass of 30 kilograms. What's her weight in newtons? Assume that acceleration due to gravity is 9.8 N/kg.
    7·1 answer
  • A charge of 7.00 mC is placed at opposite corners corner of a square 0.100 m on a side and a charge of -7.00 mC is placed at oth
    6·1 answer
  • 1. What are three questions you should ask before joining a club?
    13·1 answer
  • Used to measure temperature
    12·1 answer
  • How does the friction get affected by the nature of surface?
    13·1 answer
  • What is the only bone of the skull that moves?
    8·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!