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scZoUnD [109]
3 years ago
5

An object can begin to accelerate without a force acting on it true or false

Physics
1 answer:
Lyrx [107]3 years ago
8 0
I believe the answer is true
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marshall27 [118]

300

could i get brainiest

5 0
3 years ago
You are the design engineer in charge of testing the crashworthiness of new automobile models. Cars are tested by smashing them
BaLLatris [955]

Answer:

average force  is 138900 N

Explanation:

given data

speed = 50 km/h = 13.89 m/s

mass = 1500 kg

time = 0.15 s

to find out

average force

solution

we know initial velocity of car is positive

we will apply here equation to find force that is

Force x change in time that is equal to  mass x change in speed    ................1

so put here all value of mass, time and velocity in equation 1

Force x 0.15 =  1500 x ( -13.89)

force = 138900 N

so average force  is 138900 N

3 0
3 years ago
This equation shows the reaction that occurs when charcoal burns. What type<br> of reaction is it?
TiliK225 [7]

Explanation:

Exothermic

Because here Energy is released.

3 0
3 years ago
Read 2 more answers
If the electric charge on the object is tripled while its mass remains the same, find the direction and magnitude of its acceler
maksim [4K]
F = qE = mg

E = mg/q = 0.017*9.81('-3.1x10^-6) = 5.38x10^4 = -53,800 N/C

E' = 0.5E = -26,900N/C 

 2q -mg= ma, Answer is 9.81 m/s^2  and it's positive because the force is upward.
8 0
3 years ago
You are travelling by skateboard at 3.0 m/s and start to accelerate. If you
vovangra [49]

Answer: 8m/s

Explanation:

Vs= 3 m/s

Vf=?

a=0.5m/s²

t=10s

-----------

a=Vf-Vs/t

at=Vf-Vs

0.5*10s=Vf-Vs

5m/s=Vf-3m/s

5m/s+3m/s=Vf

Vf=8m/s

6 0
3 years ago
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