Rita is riding a 7.0 kilogram bike at a velocity of 15 meters/second. Rita’s mass is 42 kilograms. What is her momentum?
2 answers:
Answer:
Momentum, p = 735 kg-m/s
Explanation:
It is given that,
Mass of the bike, m = 7 kg
Speed of the bike, v = 15 m/s
Mass of Rita, m' = 42 kg
The expression for the momentum of an object is given by :
p = mv
Here, m is the total mass of bike and Rita
p = 735 kg-m/s
So, her momentum is 735 kg-m/s. Hence, this is the required solution.
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Answer:
d. Its magnitude and its direction both remained the same.
Explanation:
Momentum can be defined as the multiplication (product) of the mass possessed by an object and its velocity. Momentum is considered to be a vector quantity because it has both magnitude and direction.
Mathematically, momentum is given by the formula;
The law of conservation of momentum states that the total linear momentum of any closed system would always remain constant with respect to time.
This ultimately implies that, the law of conservation of momentum states that if objects exert forces only on each other, their total momentum is conserved.
In this scenario, a rubber ball moving at a speed of 5 m/s hit a flat wall and returned to the thrower at 5 m/s. Thus, the statement which correctly describes the momentum of the rubber ball is that its magnitude and its direction both remained the same because its velocity didn't change while returning to the thrower.