1 watt = 1 joule/sec; 1 joule = 1 N*m (Newton * meter)
1000 N * 4 m / 2 sec = 2000 N*M/sec = 2000 watts
But this is just the power to lift the load and does not take into account any friction or the power required to create the magnetic field in the windings.
approx. 50 seconds
The answer will depend on the conditions under which the body is moving and how sophisticated your calculations need to be. On (or near) the surface of the earth, if the body had velocity v0 ms-1 at time t0 seconds then in the simple model, its velocity at time t seconds will be v = v0 - 9.81*t ms-1 (approx). The vertical distance will be v0t - 9.81t2 metres. In a more sophisticated model you would include air resistance. Also if v0 is large, it is possible that the height attained is large enough to affect deceleration due to gravity.
Multiply by a value in seconds, that way you find out the distance. The distance will be in metres which will be travelled in a certain amount of seconds
The Smith System recommends a minimum following distance of four seconds for vehicles under 40 feet in length during good weather conditions to ensure adequate reaction time and safety. This distance allows drivers to maintain a buffer zone, giving them enough time to respond to sudden stops or emergencies. By adhering to this guideline, drivers can reduce the risk of collisions and enhance overall road safety.
Speed = distance/Time = 1000 metres/100 seconds = 10 metres per second.
When following large trucks, maintain at least a minimum of a ______ second following distance.
2
I usually leave 5 to 6 seconds minimum following distance under those condition, and have had no accidents . . .
The distance depends upon the speed. It is the distance required to result in a time interval of at least two seconds.It depends on your speed.
In good weather and clear visibility, drivers should maintain a minimum following distance of at least three seconds to allow sufficient time to react to any sudden changes in traffic conditions. This distance should be increased during adverse weather or when driving at higher speeds.
The work done in lifting the crate is equal to its change in potential energy: ( \text{Work} = \text{Force} \times \text{distance} = m \cdot g \cdot h ). The power required is the work done divided by the time taken: ( \text{Power} = \frac{\text{Work}}{\text{time}} ). Plug in the values to calculate the power required.
Allow a minimum of 3 seconds of braking distance at 55 MPH, add an extra second for each 5 MPH increase in speed.
Actually, 2 seconds is NOT a safe following distance. Minimum safe following distance is 5 seconds. Yes, it works at any legal speed in dry weather.
The minimum following distance behind another vehicle that should be maintained is typically 3-4 seconds. This allows enough time to react in case the vehicle in front suddenly stops or slows down.
Approx. 50 seconds
His vertical is 38.6, and he runs a40 yard dash in 4.85 seconds
approx. 50 seconds