Assuming that what you typed meant 20 seconds, rather than 2o seconds, the car is travelling at a velocity of 200 meters per second.
Answer:
50 Kg.
Explanation:
The following data were obtained from the question:
Force (F) exerted = 1000 N
Acceleration (a) = 20 m/s²
Mass (m) of object =?
Force (F) is simply defined as the product of mass (m) and acceleration (a). Mathematically, it is expressed as:
Force (F) = mass (m) × acceleration (a)
F = ma
With the above formula, we can obtain the mass of the object as illustrated below:
Force (F) exerted = 1000 N
Acceleration (a) = 20 m/s²
Mass (m) of object =?
F = ma
1000 = m × 20
Divide both side by 20
m = 1000/20
m = 50 Kg
Thus, the mass of the object is 50 Kg
A gradual increase in the overall temperature of the earth's atmosphere generally attributed to the greenhouse effect caused by increased levels of carbon dioxide, chlorofluorocarbons, and other pollutants.
By velocity vectors (arrow)
Since the 2-watt jobber has to dissipate twice as much power as the smaller unit I would expect it to have double the surface area. So if they are the usual cylindrical striped resistors then the larger one could have either double the length or else 1.4 times the radius of the smaller one.