The same units describe the volume of anything.
At least in a logical, reasonable system of units of
measurement, they do.
There's no reason why you can't talk about a gallon of steel
or a cubic foot of water.
Time taken = Distance traveled/Average speed
Here distance traveled by the car = 240 km
Average speed of the car = 60 km/hr
So total time taken = 240/60 = 4 hours
= 240 minutes
= 14400 seconds
So the car will take 4 hours to cover 240 kilometers at an average speed of 60 km/hr.
I believe the correct answer is B
Move with constant speed or accelerate and will determine direction
A) Using:
2as = v² - u², where v will be 0 at max height
s = -(160)² / 2 x -32.174
s = 397.8 ft
b) Using:
s = ut + 1/2 at²
256 = 160t - 16.1t²
solving for t,
t = 2.0, t = 7.9
Now, v = u + at, for both times:
v(2) = 160 - 32.174(2)
v(2) = 95.7 ft/sec on the way up
v(7.9) = 160 - 32.174(7.9)
v(7.9) = -94.3 ft/sec; 94.3 ft/sec on the way down
c) -32.174 ft/s², which is the acceleration due to gravity.
d) s = 0
0 = 160t - 1/2 x 32.174t²
t = 9.94 seconds
