What kind of acceleration occurs when an object speeds up? positive negative neutral zero
2 answers:
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Answer:
Explanation:
From the question we are told that:
Mass
Height
Speed
Angle
Generally the equation for K.E is mathematically given by
Since
The potential energy and kinetic energy is equal to the kinetic energy as it hits the ground.
Therefore
Answer:
20 m/s
Explanation:
The stored energy is transformed to kinetic energy and since kinetic energy is given by
where m is the mass of arrow in Kg and v is the velocity of the arrow in m/s. From the principle of energy, all the energy is transformed to KE.
KE= Energy stored in bow
Changing mass from 50 g to Kg we divide by 1000 hence m=50/1000=0.05 Kg
Substituting 0.05 Kg for m and 10 J for KE then we have
0.5\times 0.05\times v^{2}=10 J
Making v the subject of the formula then
Therefore, the velocity is equivalent to 20 m/s