Here we can use Newton's II law to find the acceleration of the car

here we know that

as we know that two forces are equal in magnitude but opposite in direction so in order to find net force we need to subtract it
now from above equation


so here option A is correct
Answer:
Option C
Explanation:
v= u + at
20 = 5 + a(5)
15= a(5)
a= 3 m/s²
Force = mass × acceleration
= 10 × 3
= 30 N
Answer:
Argon
Explanation:
Argon, an inert gas, is the third most abundant gas in the atmosphere.
Answer:
The rate of change of the distance is 14.89.
Explanation:
Given that,
Distance = 145 miles
Speed of car = 42 miles/hr
Distance covered by car = 55 miles
We need to calculate the the rate of change of the distance
According to figure,
Let OA is x, and AB is y.
Now, using Pythagorean theorem

On differentiating




Hence, The rate of change of the distance is 14.89.
Answer:
its a solid but can flow
Explanation:
those answers to choose from are wrong