(Look at the graphs for questions 1 and 2.)
1 answer:
Solving Q1 : What is y when x = 50? (the solution graph is attached below)
We can make a rectangle (in red color on solution graph) to find the value of y corresponding to x = 50. We can see that y-value lies between 200 and 250.
It is near about y = 225. Hence, option B is correct.
Solving Q2 : What is x when y = 300? (the solution graph is attached below)
We can make a rectangle (in red color on solution graph) to find the value of x corresponding to y = 300. We can see that x-value lies between 60 and 65.
It is near about x = 61. Hence, option A is correct.
Solving Q3 : Solve 17x = 3.
Hence, option A is correct i.e. x = 0.18
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We have:
Initial velocity (u) = 32 m/s
Final velocity (v) = 0 m/s ⇒ The value is zero because the car comes to stationary position when it stops
Time = 14 seconds
We can use one of the constant acceleration equation:
where 
is the acceleration
The acceleration is 2.3 m/s⁻² and the negative sign shows deceleration
Initial velocity (u) = 32 m/s
Final velocity (v) = 0 m/s ⇒ The value is zero because the car comes to stationary position when it stops
Time = 14 seconds
We can use one of the constant acceleration equation:
The acceleration is 2.3 m/s⁻² and the negative sign shows deceleration