Answer:
20 N
Explanation:
<em>Newton's second Law of motion</em> law states that If there is a external force acting on an object. Then the rate of change of momentum of that object is directly proportional to the force acting on its.
- the net force acting upon the object <em>(F)</em>
- the mass of the object. <em>(m)</em>
- <em>V </em>Final velocity of the object
- U initial velocity of the object
- mV -Final momentum of the object
- mU - Initial momentum of the object
Due to momentum change of that object, momentum change. We can write the equation bellow this,
F = (mV-mU)/t
When m is constant we can write the above expression like this,
F = m (V-U)/t
There for
(V-U)/t = a ( Rate of change of velocity can be denoted as acceleration )
F = m× a
we can state this in mathematically,
a = F/m
in another representation
F = m*a
Net Force = mass*acceleration
= 10 * 2
= 20 N
object is subjected to a negative acceleration due to the friction.
671mi/hr
= 671/60min (calculates miles/min)
= (671/60) ÷ 60seconds (calculates miles/sec)
((671/60) ÷ 60)× 1609m
= 299.899 meters/sec
= 299.90m (round off to 2 decimals )
Answer:
I believe the answer is 2.5 N.......
