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Dovator [93]
3 years ago
14

a child riding a bicycle at 15 meters per second accelerates at -3,0 meters per second? for 4.0 seconds. What is the child's spe

ed A at the end of this 4.0-second interval? (with work, all steps))
Physics
1 answer:
Vika [28.1K]3 years ago
5 0

Answer:

<h2> 27m/s</h2>

Explanation:

Given data

initital velocity u=15m/s

deceleration a=3m/s^2

time t= 4 seconds

final velocity v= ?

Applying the expression

v=u+at------1

substituting our data into the expression we have

v=15+3*4

v=15+12

v=27m/s

The velocity after 4 seconds is 27m/s

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Gibbons, small Asian apes, move by brachiation, swinging below a handhold to move forward to the next handhold. A 9.0 kg gibbon
aleksklad [387]

Answer:

230 N

Explanation:

At the lowest position , the velocity is maximum hence at this point, maximum support force  T  is given by the branch.

The swinging motion of the ape on a vertical circular path , will require

a centripetal force  in upward direction . This is related to weight as follows

T - mg = m v² / R

R is radius of circular path . m is mass of the ape and velocity is 3.2 m/s

T =  mg -  mv² / R

T = 8.5 X 9.8 + 8.5 X 3.2² / .60  { R is length of hand of ape. }

T = 83.3 + 145.06

= 228.36

= 230 N ( approximately )

5 0
3 years ago
How can you tell if something has a lot of kinetic energy? How can you tell if something only has a little bit of kinetic energy
dezoksy [38]

Based on the equation KE = 1/2(m)(v^2), Kinetic Energy can be measured based on velocity. If an object has a large velocity, it have a larger kinetic energy than if the velocity is small.

Hope this helps.

If this helped you, please vote me as brainliest!

3 0
4 years ago
Can a black light be used to charge a solar powered product
Goshia [24]
Yes It can because the black light would be considered solar powered
6 0
3 years ago
Describe briefly what specific information is given by each of the four quantum numbers
____ [38]
The following information is given by each four quantum numbers
<span>Main energy level,
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number of orbitals per main energy level, number of electrons per sublevels
</span>hope it helps
3 0
3 years ago
During a test crash and airbag in place to stop at dummies forward motion the dummies mass is 75 kg if the net force of the dumm
strojnjashka [21]
The dummy's acceleration is 11 m/s^2
(also known as 11 meters per sec. per sec.)

a = F/m
   = 825 N/75 kg
   = 11 m/s^2


3 0
3 years ago
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