26. A player throws a ball horizontally
250 g with the initial velocity of 18 mis. Other
player, almost the same level, catches the ball
When the speed dropped to 12 mis. The
work to overcome air resistance,
assumed constant, is:
a) 22.5 J
b) 41.8 J
c) 58.3 J
d) 61.4 J
e) None of the above.
30. The following forms are commonly used in
media to express the power
hidroeleótrica a plant. The only right is
a) 200 000 kW
b) 200 000 kilowatt-days
c) 200 000 kilowatt-hours
d) 200 000 kilowatts per day
e) 200 000 kilowatts per second
250 g with the initial velocity of 18 mis. Other
player, almost the same level, catches the ball
When the speed dropped to 12 mis. The
work to overcome air resistance,
assumed constant, is:
a) 22.5 J
b) 41.8 J
c) 58.3 J
d) 61.4 J
e) None of the above.
30. The following forms are commonly used in
media to express the power
hidroeleótrica a plant. The only right is
a) 200 000 kW
b) 200 000 kilowatt-days
c) 200 000 kilowatt-hours
d) 200 000 kilowatts per day
e) 200 000 kilowatts per second