If you start with the number 3.0 and move the decimal point one unit to the left, you wind up with 0.30. If you move the decimal
1 answer:
Answer:
10000
Explanation:
When the decimal point shifts towards left, for each shift, the number is actually divided by 10.
When the decimal point shifts towards right, for each shift, the number is actually multiplied by 10.
when decimal point is shifted by total four units towards left, it is 0.0003 It is same as that dividing 3.0 by 10000
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Answer
given,
Mass of Kara's car = 1300 Kg
moving with speed = 11 m/s
time taken to stop = 0.14 s
final velocity = 0 m/s
distance between Lisa ford and Kara's car = 30 m
a) change in momentum of Kara's car
Δ P = m Δ v
Δ P = - 1.43 x 10⁴ kg.m/s
b) impulse is equal to change in momentum of the car
I = - 1.43 x 10⁴ kg.m/s
c) magnitude of force experienced by Kara
I = F x t
I is impulse acting on the car
t is time
- 1.43 x 10⁴= F x 0.14
F = -1.021 x 10⁵ N
negative sign represents the direction of force