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Phy101 Assignment No 1 Solution Fall 2021 By COnceptsBuilder

by Usman Ali
Phy101 Assignment No 1 Solution Fall 2021

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Question No. 1                                                                                                                                                                                                           

The driver of a 2.0  × 103 kg red car traveling on the highway at 45m/s slams on his brakes to avoid striking a second yellow car in front of him, which had come to rest because of blocking ahead as shown in above Fig. After the brakes are applied, a constant friction force of 7.5 × 103 N acts on the car. Ignore air resistance.

(a) Determine the least distance should the brakes be applied to avoid a collision with the other vehicle?

(b) If the distance between the vehicles is initially only 40.0 m, at what speed would the collision occur?

(c) Write your conclusive observations on the result obtained from this numerical. i.e. the importance of Physics in daily life.

Give data of Problem:

Mass of car is =2.0*103kg

Velocity of car is = u =45m\s

Friction force Is =v=0

Final velocity=v=0

Frictional force Is =7.5*103N

Question (a)

Determine the least distance=s=d=?

 First  of all we need acceleration

Ffr  =  uk.N = uk.mg

Friction force=normal force in opposition direction

Fn = -Ffr

uk mg = ma

a=-uk.g

(g=9.8 and u=7.5*103)

A = -73.5*103

By putting their value we find out

S= 0.0137m

Question (b)

What speed would the occur with velocity=40.0 m?

Here vi=40m/s

Solution:

V2 = u2+2as

V2 = (40)2 + (-2013.9)

V2 = 1600 – 2013.9

V = -20.34m/s

Question (c )

 Write your conclusive observations on the result obtained from this numerical. i.e. the importance of Physics in daily life.

Answer:

The given result shows that Law of Newtons play key role in our life. And When we look deep this scenario according to physics then we can also see the it’s importance in daily life.

The given situation mainly focuses on Newtons Law of Motion. Moreover also on the following examples;

1. Brakes applied by a Bus Driver Abruptly

2. An Object Placed on a Plane Surface

3. Marathoner Running beyond Finish Line

4. A Ball Rolling on the Ground

5. An Object Thrown in Outer Space

6. Washing Machine Dryer

7. Dusting a Carpet

8. Shaking a Tree

9. The Jerk when a Vehicle Starts

10. Athlete taking a Short Run before Long/High Jump

Final Words

According to my knowledge and Phy101 handouts research, we found Phy101 Assignment No 1 Solution fall 2021 accurately. If you found any query in the whole data can comment easily.

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