The medicine ball wall hit the ground faster, if that makes sense to you
Answer: 6.175 km
Explanation:
from the question, we have the following
velocity of the automobile = 95 km/g
velocity of the train = 75 km/h
length of the train = 1.30 km
since the automobile and the train are moving in the same direction, we need to find the velocity of the car relative to the train which will be their difference in speed = 95 - 75 = 20 km/h
we need to find the time it takes the automobile to overtake the train using the formula time = distance / speed , with the distance being the length of the train.
time (t) = 1.3 / 20
= 0.065 hour
now we can find the distance traveled by the automobile using the the time taken for it to overtake the train and the speed of the automobile.
therefore, distance = speed x time
distance = 95 x 0.065 =6.175 km
Answer: The system internal energy is 40 Joules.
Explanation: As suggested, the formula 
should be used. 70 Joules worth of thermal energy are added, and the system does 30 Joules worth of work (energy expenditure).
Answer:
Explanation:
From the question we are told that:
Mass of astronaut 
Mass of tool 
Distance 
Velocity of separation 
Velocity of tool bag 
Generally the equation for momentum is mathematically given by
Therefore
Initial Momentum before drop
Initial Momentum after drop
Therefore
Since 
Generally the equation for Time T is mathematically given by
