What is the scientific meaning of energy?

Physics

1 answer:

JulijaS [17]3 years ago

8 0

Answer:

it is B

Explanation:

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Find the force of a 600 kg car experiences accelerating from 10 km/hr to 35 km/hr in 3 seconds?

NNADVOKAT [17]

Given,
m=600 kg
u=10 km/hr
v=35 km/hr
t= 3 sec
a=?
F=?

To find a:
u=10 km/hr=5/18*10=25/6=4.16m/s
v=35 km/hr=5/18*35=175/18=9.72m/s
t=3 sec

Now we have,
u=4.16m/s
v=9.72m/s
t=3 sec

To find acceleration:
a=(v-u)/t
a=( 9.72-4.16)/3
a=5.56/3
a=1.85m/s^2

To find F:
m=600 kg
a=1.85 m/s^2

F=ma
F=600*1.85
F=1110N

Therefore, F=1110N

3 0

4 years ago

Lifting book over your head is what type of energy

AleksandrR [38]

Answer:

potential energy

Explanation:

8 0

3 years ago

Please explain why charcoal grills or charcoal fires should never be used for heating inside the house.

vova2212 [387]

Too much smoke and debris around the house?

6 0

4 years ago

a 202 kg bumper car moving right at 8.50 m/s collides with a 355 kg car at rest. Find the total momentum of the system.

Hunter-Best [27]

Explanation:It is given that,

Mass of bumper car, m₁ = 202 kg

Initial speed of the bumper car, u₁ = 8.5 m/s

Mass of the other car, m₂ = 355 kg

Initial velocity of the other car is 0 as it at rest, u₂ = 0

Final velocity of the other car after collision, v₂ = 5.8 m/s

Let p₁ is momentum of of 202 kg car, p₁ = m₁v₁

Using the conservation of linear momentum as :

p₁ = m₁v₁ = -342 kg-m/s

So, the momentum of the 202 kg car afterwards is 342 kg-m/s. Hence, this is the required solution.

3 0

3 years ago

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kvv77 [185]

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4.An activity that could help improve my striking and my reaction time.
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One element of skill-related fitness that is important to being successful in the activity is speed and reaction time skills.6. Running, jogging, sprinting, and jump roping.

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4 years ago