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
gtnhenbr [62]
3 years ago
6

A ball is launched upward at an angle from the ground. Which way does its velocity point at the top?

Physics
1 answer:
gogolik [260]3 years ago
7 0
The answer is B because at the very top the acceleration is ZERO so it isn’t moving
You might be interested in
A car passes point “A” and then 120 meters later. It’s velocity was measured 21 m/s. If it’s acceleration was constant at 0.853
Norma-Jean [14]

Recall that

{v_f}^2-{v_i}^2=2a\Delta x

where v_i and v_f are the initial and final velocities, respecitvely; a is the acceleration; and \Delta x is the change in position.

So we have

\left(21\dfrac{\rm m}{\rm s}\right)^2-{v_i}^2=2\left(0.853\dfrac{\rm m}{\mathrm s^2}\right)(120\,\mathrm m)

\implies v_i\approx\boxed{15.4\dfrac{\rm m}{\rm s}}

(Normally, this equation has two solutions, but we omit the negative one because the car is moving in one direction.)

7 0
3 years ago
Am I correct?? Will give brainliest
IRISSAK [1]

You are correct earth science is studied to predict planetery changes


4 0
3 years ago
Read 2 more answers
A block of mass m = 1.5 kg is released from rest at a height of H = 0.81 m on a curved frictionless ramp. At the foot of the ram
kogti [31]

Answer:

0.31 m

Explanation:

m = mass of the block = 1.5 kg

H = height from which the block is released on ramp = 0.81 m

k = spring constant of the spring = 250 N/m

x = maximum compression of the spring

using conservation of energy

Spring potential energy gained by spring = Potential energy lost by block

(0.5) k x² = mgH

(0.5) (250) x² = (1.5) (9.8) (0.81)

x = 0.31 m

7 0
4 years ago
A spacecraft in outer space increases velocity by firing its rockets. How can hot gases escaping from its rockets change the vel
Elena-2011 [213]

Answer:

Momentum is conserved.

Explanation:

-Momentum is conserved.

-By Newton's third law (For every action, there is an equal and opposite reaction.)-the change in momentum of gases in one direction must be balanced by an equal change in momentum of the spacecraft in the opposite direction.

3 0
3 years ago
Pls hurry worth 28 points <3
Kipish [7]

Answer:

Explanation:

I will GUESS that we're supposed to be looking at a plot of a position in time.

IF that is the case.

THEN the answer would be Point B because it has the steepest slope.

6 0
3 years ago
Other questions:
  • 5. There was less work done. Which of the statements describes how this is possible? (2 points) There was less force applied or
    13·2 answers
  • A bicycle wheel of radius 14 cm is mounted at the middle of an axle 96 cm long. The tire and rim weigh 23 N. The wheel is spun a
    14·1 answer
  • A 9.30 kg mass is moving at a constant velocity of 4.00 m/s.
    13·1 answer
  • Colonel John P. Stapp, USAF, participated in studying whether a jet pilot could survive emergency ejection. On March 19, 1954, h
    11·1 answer
  • Compute the kinetic energy of a proton (mass 1.67×10−27kg ) using both the nonrelativistic and relativistic expressions for spee
    14·1 answer
  • A bond between a positively-charged particle and a negatively-charged particle is a(n) _______ bond.
    6·1 answer
  • Which phase always fills its container?
    12·2 answers
  • What are magnetic materials
    12·1 answer
  • 50 points if brainliest !!!!!!!!!!
    10·1 answer
  • Which is TRUE about static electricity?
    12·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!