Work done = force x distance
work done = 15 x 3
work done = 45J
Explanation:
(a) We know that the acceleration of the car is given by :
a = change in speed / time taken
If the speed of the car is constant in a straight line, the acceleration of the car is zero because there is no change in the speed of the car.
(b) For the driver steer a car traveling at constant speed so that the magnitude of the acceleration remains constant, the driver should drive the car in the circular path. This is because, in circular path the speed of an object remains the same while its velocity changes.
Answer:
12.6 (3 sig. fig.)
Explanation:
(12^2 + 4^2)^1/2 = 12.6 (3 sig. fig.)
You would get a wrong calculaton which if you are doing an experiment it can mess with the results
Density = Mass / Volume
1000 cm³ = 1 liter
1cm³ = 1/1000 liter = 1 ml
100 ml = 100 cm³
Density = 0.196 g / 100 cm³ = 0.00196 g/cm³