how to work out speed?
242520
The formula for speed is speed = distance ÷ time. To work out what the units are for speed, you need to know the units for distance and time. In this example, distance is in metres (m) and time is in seconds (s), so the units will be in metres per second (m/s).
579496
['66 + (6.2 x weight) + (12.7 x height) - (6.76 x age) = BMR for men.', '655.1 + (4.35 x weight) + (4.7 x height) - (4.7 x age) = BMR for women.']
1419217
If it's red, it's an estimate. Here's your equation: MET value multiplied by weight in kilograms tells you calories burned per hour (MET*weight in kg=calories/hour). If you only want to know how many calories you burned in a half hour, divide that number by two.
1206121
Average Speed = (Total distance)/(Total Time) = (1800 + 1800)/(30 + 45) = 3600/75 = 48 km/hr. Hence the correct option here is C) 48 km/hr. So to find the average speed never use the formula of the averages but try to find the total distance covered and the total time taken.
723871
['Male (metric): BMR = (13.75 x WKG ) + (5 x HC ) - (6.76 x age) + 66.', 'Male (imperial): BMR = (6.25 x WP ) + (12.7 x HI ) - (6.76 x age) + 66.', 'Female (metric): BMR = (9.56 x WKG ) + (1.85 x HC ) - 4.68 x age) + 655.']
393284
['An object which is moving has momentum. ... ', 'p = m • v.', "In a collision, a force acts upon an object for a given amount of time to change the object's velocity. ... ", 'Impulse = Momentum Change.', 'F • t = mass • Delta v.', 'F1 = - F2', 't1 = t2', 'If A = - B.']
1187143
This equation shows the relationship between speed, distance traveled and time taken: Speed is distance divided by the time taken. For example, a car travels 30 kilometers in 2 hours. Its speed is 30 ÷ 2 = 15km/hr.
928087
All you need to do is multiply the speed by intervals of 0.5, starting with 2. That'll give you the stopping distance in feet, which is acceptable for the theory test. For example… There are 3.3 feet in a metre – so divide the distance in feet by 3.3 to get the stopping distance in metres.
245370
['When two trains are going in the same direction, then their relative speed is the difference between the two speeds.', 'When two trains are moving in the opposite direction, then their relative speed is the sum of the two speeds.']
29877
Average speed uses the equation "speed equals distance traveled (d) divided by travel time (t)," or average speed = d ÷ t. Average velocity equals speed in a direction. Average acceleration (a) equals change in velocity (Δv) divided by the time interval of the velocity change (Δt), or a = Δv ÷ Δt.
18773
Here's your equation: MET value multiplied by weight in kilograms tells you calories burned per hour (MET*weight in kg=calories/hour). If you only want to know how many calories you burned in a half hour, divide that number by two. If you want to know about 15 minutes, divide that number by four.
952803
The equation for speed is simple: distance divided by time. You take the distance traveled (for example 3 meters), and divide it by the time (three seconds) to get the speed (one meter per second).
778034
In this case we are solving for VELOCITY, so click on that button. Enter 12 in the "time" box and choose seconds from its menu. Enter 100 in the "distance" box and choose yards from its menu. Click the CALCULATE button and you will see this equals 17.045 miles per hour.
36954
To solve for distance use the formula for distance d = st, or distance equals speed times time. Rate and speed are similar since they both represent some distance per unit time like miles per hour or kilometers per hour. If rate r is the same as speed s, r = s = d/t.
232295
Wnet = md (vf - vi)/∆t. The distance traveled is the average speed times ∆t, d = ∆t (vf + vi)/2. Wnet = m(vf - vi)(vf + vi)/2 = ½m(vf2 - vi2).
133024
You can use the equivalent formula d = rt which means distance equals rate times time. To solve for speed or rate use the formula for speed, s = d/t which means speed equals distance divided by time. To solve for time use the formula for time, t = d/s which means time equals distance divided by speed.
10228
Instantaneous speed is found by taking the absolute value of instantaneous velocity, and it is always positive. Average speed is total distance traveled divided by elapsed time.