Answer:
31.28m/s
Explanation:
We can use the third key equation of accelerated motion
Δd = viΔt+1/2aΔt^2
subtitute in the values we know
41.6 = vi(1.89)+1/2(-9.8)(1.89)^2
41.6 = vi(1.89) - 17.52
59.12 = vi(1.89)
vi = 31.28
The hot molecules around the heat source expands, becomes less dense, then rises. When it rises, the cooler molecules moves down to take its place. This can occur in fluid, which include gas or liquid.
Answer:
12 years
Explanation:
12 years is correct because how long is Jupiter one year is 12 years
Answer:
work done will be equal to 305.05 J
Explanation:
We have given force exerted F = 45 N
Angle with the horizontal 
Distance moved due to exerted force d = 9.1 m
Work done is equal to 
, here F is force 
is angle with horizontal and d is distance moved due to force
So work done 
So work done will be equal to 305.05 J
We now that follow newton rules f=ma so net force equal to mass*acceleration=>f=50*1.5=75 N
