The momentum of a moving object is given by:
where m is the mass of the object and v its speed.
In this problem, the ball has a mass of
and its momentum is
, so we can rearrange the previous equation to find the speed of the ball:
The spontaneous emission of radiations from an unstable nuclei is known as natural radioactivity. on the other hand, The process of emission of radiations from naturally occurring isotopes when they are bombarded with sub-atomic particles or high levels of X-rays or gamma rays called artificial radioactivity.
The average speed of the car is
(the mile marker he passes at the end of the 1.75 h) minus 115
divided by
(1.75 hours) .
The unit is 'miles per hour'.
Answer:
15.6m/s
Completed Question;
For a short period of time, the frictional driving force acting on the wheels of the 2.5-Mg van is N= 600t^2 , where t is in seconds. If the van has a speed of 20 km/h when t = 0, determine its speed when t = 5
Explanation:
Mass m = 2500kg
Speed v1 = 20km/h = 20/3.6 m/s = 5.556 m/s
To determine speed v2;
Using the principle of momentum and impulse;
mv1 + ∫₀⁵ F dt = mv2
