Answer:
Force of 6250N is required to slow down the body to zero.
Explanation:
Speed(V)=20m/s
Initial speed (u) =0m/s
Mass(M)=1000kg
Time(t)=3.2seconds
Using first equation of motion to find the acceleration of the body:
V=U + at
20m/s=0 + a*3.2s
Therefore, a=(20m/s)/3.2s
a=6.25m/s^2
To find the force required to stop the body or get it down to zero:
Force(F)=mass x acceleration
F=(1000kg)*(6.25m/s^2)
F=6250N.
Therefore a force of 6250N is required to slow it down.
Answer:
13.15 watt
Explanation:
work done = Force x displacement
W = 25.3 x 1.3
W= 32.89 J
Power = Work done / time
Power = 32.89 / 2.5
Power = 13.15 Watt
The magnitude of acceleration, is the same. You are probably thinking about centripetal force F=mv^2/r. But the question asks about the centripetal acceleration ac=v^2/r of the ride. The rides velocity and radius remains constant so the magnitude of acceleration of the ride is the same for both adult and child
Answer: Rate
Explanation: Speed is the rate an object travels over a given time period.
Answer:
The weight of the water is 10.0 kg
Explanation:
Hi there!!
Since the density of water is 1 g/ml, knowing the volume of water, we can determine its weight. First, let´s convert the unit gallon into liters:
1 gallon = 3.785 l
Then:
2.65 gallons · (3.785 l / 1 gallon) = 10.0 l
Since 1 l = 1000 ml, 10.0 l will be 10000 ml
The density of water is 1 g/ml, then the weight of 10.0 l is 10000 g or 10.0 kg.
