No the speed does not depend on its mass, yes to the second question and yes to the third
Answer:
The force of the impact would be smaller
Explanation: Examples:
If the force is big then the time would be small (2500N of Force = 10 seconds)
If the force is small then the time would be big (250N of Force = 50 seconds)
Impulse/Collision -> [Ft] = [M (vf-vo)] <- Change in momentum
Answer:
Speed of the bicyclist when going to city = 14 miles per hour.
Speed while return trip = 8 miles per hour.
Explanation:
Let the speed of the bicyclist when going to city = x miles per hour.
Speed while return trip = x - 6 miles per hour.
Total time taken = 11 hrs = Time for the trip to city + time taken for return trip.
Also, Time = Distance / Time.
So,
56 / x + 56 / ( x -6) = 11
11x² -178x + 336 = 0
Solving for x we get:
<u>Acceptable x = 14 miles per hour.</u>
<u>Speed while return trip = x - 6 miles per hour = 8 miles per hour.</u>
I'm not 100% sure but I think the answer is 60.4, because you multiply 3.20 by 10, to get 32 - 9 = 23, then subtract 23 from 83.4. Hope this helps you, and good luck!!!
If solid, cold metal like brass doesn't melt at room temperature like ice does, than the bass can stand much more heat then a ice cube, so it needs to be hotter to melt, so the melting point of ice is lower then brass's melting point