7. Jezabelle was applying her makeup when she drove into Albuquerque migns busy
1 answer:
100000N
Explanation:
Mass of car = 1300kg
velocity of car = 11m/s
time = 0.14s
Unknown:
Force = ?
Solution:
To find the force experienced by Jezabelle's car,
Newton's second law :
F = ma = m
where a =
v =final velocity
u= initial velocity
t = time taken
F = 1300 x = 102142.85N rounding off 100000N
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Answer:
The force is 274 N.
Explanation:
In figure 2:
(d) Let the tension in the string is T.
According to the Newton's second law,
Net force = mass x acceleration
Apply for 200N.
Now put in (1)
T - 114.7 = 20.4 x 7.81
T = 274 N
Answer:
The detailed calculations are shown below;
Explanation:
a)The maximum acceleration of the particle:
It is seen that the maximum change in velocity is at the time between 8s to 10s.
Maximum acceleration:
=
= 10 m/
b) The deceleration of the particle
The velocity of particle is decreased after 10s so,
deceleration = -
= - 6.67 m/
c)The total distance traveled by the particle = Area under the curve
= * 4*20 + 4*20 +
* 2*20+ 2*20+
* 40*16
= 290 m
d)The average velocity of the particle =
=
= 18.12 m/s