1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
vivado [14]
3 years ago
6

A car travelled 60 km west in 1.33 h along a straight line, then returned back east for 40 km in 0.67 h. Its average velocity is

:
a) 10 km/h, east.
b) 10 km/h, west.
c) 50 km/h, east.
d) 50 km/h, west.
Physics
1 answer:
Sholpan [36]3 years ago
7 0

Answer:

Option A

Explanation:

Velocity is expressed as distance covered per unit time, with respect to direction. Therefore, v=d/t

Given distance west as 60 km and time as 1.33 then velocity will be

V=60/1.33=45.112781954887 km/h

Rounded off as 45.11 km/h West

Velocity in East will also be given by substituting 40 km for d and 0.67 h for h hence

V=40/0.67=59.701492537313 km/h rounded off as 59.70 km/h East

Taking East as positive then West as negative, the sum of two velocities will be (59.70+-45.11)/2=7.295 km/h East

Approximately 10 km/h East since it is positive

You might be interested in
I WILLLL GIVEEEEEE YOU BRAINLYYYYY!!!!!!!!!! Write your own definition of Scientific Law and a Scientific Theory in your own wor
svp [43]

Explanation:

scientific laws are totally fixed.

sciebtific theories are not totally accurate.

5 0
3 years ago
Consider that a clay model of a tiger has a mass of 0.195 kg and glides on ice at a speed of 0.75 m/s. It hits another clay mode
juin [17]

Answer:

The final velocity after the collision is 0.27 m/s.    

Explanation:

Given that,

Mass of tiger, m = 0.195 kg

Initial speed of tiger model, v = 0.75 m/s

Mass of another clay model, m' = 0.335 kg

Initially, second model is at rest, v' = 0

We need to find the final velocity after the collision. It is a case of inelastic collision. Using the conservation of linear momentum as :

mv+m'v'=(m+m')V\\\\V=\dfrac{mv+m'v'}{(m+m')}\\\\V=\dfrac{0.195\times 0.75}{(0.195 +0.335 )}\\\\V=0.27\ m/s

So, the final velocity after the collision is 0.27 m/s.    

6 0
4 years ago
A tsunami is ________. A. a sea wave generated by an earthquake, landslide, or meteor impact that may destroy coastal cities tho
a_sh-v [17]

Answer:

A. A sea wave generated by a displacement of water

Explanation:

7 0
3 years ago
WILL GIVE BRAINLIEST PLZ HELP
MatroZZZ [7]

Answer:

Question 1: protons and electrons

Question 2: atomic number

Explanation: trust me

4 0
3 years ago
Read 2 more answers
A 3.7kg block on a horizontal frictionless surface is attached to a spring whose force constant is 450 N/m. The block is pulled
earnstyle [38]

Answer:

U=1.44 J

Explanation:

Given that

m = 3.7 kg

K = 450 N/m

X= 0.08 m

We know that spring stored potential energy(U) and this potential energy given as

U=\dfrac{1}{2}KX^2

By putting the values

U=\dfrac{1}{2}KX^2

U=\dfrac{1}{2}\times 450\times 0.08^2

U=1.44 J

5 0
3 years ago
Other questions:
  • What is the shape of popcorn
    10·1 answer
  • In the case of a swinging pendulum, Potential Energy is greatest when ____.
    6·2 answers
  • A system initially has an internal energy E of 501 J. It undergoes a process during which it releases 111 J of heat energy to th
    12·1 answer
  • A small car meshes with a large truck in a head-on collision. Which of the following statements concerning the magnitude of the
    14·1 answer
  • The pivot point of a lever is called the fulcrum. please select the best answer from the choices provided t f user: the thread a
    6·2 answers
  • In February 1955, a paratrooper fell 1200 ft from an
    14·1 answer
  • What is the difference between longitudinal and transverse waves? Compare and contrast the direction of their movement, movement
    12·1 answer
  • 18. A net force of 1.0N acts on a 4.0-kg object, initially at rest, for 4.0 seconds. What is the distance the object moves durin
    5·2 answers
  • Two planes leave wichita at noon. One planes flies east 30m/h faster than the other plane, flying east at what time will they be
    12·1 answer
  • g Two cars, car 1 and car 2 are traveling in opposite directions, car 1 with a magnitude of velocity v1=13.0 m/s and car 2 v2= 7
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!