300/2 = 150 seconds, or 2 1/2 minutes.
1 foot away
(145 miles/hour) / 2 seconds = (319/3) ft/sec2 = (106 and 1/3) ft/sec2 = about 3.3 'G's===================================Using:60 mph = 88 ft/secG = 32.2 ft/sec2
The rule for calculating the velocity of a falling object is V = gt, where V is the velocity, g is the acceleration due to gravity (32 ft/s^2), and t is the time in seconds. Plugging in the values: V = (32 ft/s^2) x 5 seconds = 160 ft/s. Therefore, the piano dropped 5 seconds ago is falling at a rate of 160 feet per second.
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Half of 178 is 178/2 = 89
In 2 seconds at 30 mph (44 ft/s), the distance travelled would be 88 feet. This is calculated by multiplying the speed in feet per second (44 ft/s) by the time in seconds (2 seconds).
They are: 2*89 = 178 and 1*178 = 178
Constant rate of change mean a variable changes constantly over the same time period. Best example is gravity and velocity, which are defined as v=at, where a=gravity=32.2 ft/s2. if you drop an object, after 1 sec, the velocity =32.2 ft/s. After 2 seconds, v= (32.2)*(2)=6.4.4 ft/s, and so on... So, even though gravity is constant, the rate of change in velocity is it doubles every second.
Yes, but it is customary to express it as 2 seconds per foot. The denominator - or second measure - usually takes the value 1 in a unit rate.
178 = 2*89
1, 2, 89, 178.