Unit Test #35

Select your answers to the following 10 questions from the pop-up menus in the right hand column. Clicking the "Begin Test Again" button will clear all the answers.

 

 

Q1:

 

Find the value of x which makes 3x2 + 6x - 4 a minimum. A. -7
B. -4
C. -1
D. 5
Answer 1:

 

Q2:

 

Differentiating a velocity function gives: A. distance
B. acceleration
C. displacement
D. gradient
Answer 2:

 

Q3:

 

The maximum value of the function 3 + 4x - x2 is A. -2
B. 2
C. 15
D. 7
Answer 3:

 

Q4:

 

Integration of a formula for velocity gives: A. distance
B. acceleration
C. time
D. gradient
Answer 4:

 

Q5:

 

An object is moving in a straight line. Its distance s cm from a fixed point after t seconds is given by the equation 
s = t2 + 2t - 1

Calculate the velocity after 3 seconds.

A. 4 cm/s
B. 8 cm/s
C. 12 cm/s
D. 17 cm/s
Answer 5:

 

Q6:

 

An object with an acceleration of zero : A. has stopped
B. has constant 
velocity
C. is slowing down
D. is speeding up
Answer 6:

 

Q7:

 

An object is moving in a straight line. Its distance x cm from a fixed point after t seconds is given by the equation 
x = t3 - 3t2 + 2t + 1

Calculate the acceleration after 2 seconds.

A. 1 cm/s2
B. 2 cm/s2
C. 6 cm/s2
D. 12 cm/s2
Answer 7:

 

Q8:

 

What is represented by the area under a velocity/time graph? A. acceleration
B. time
C. velocity
D. distance
Answer 8:

 

Q9:

 

What is represented by the gradient at any point on a distance/ time graph? A. distance
B. velocity
C. acceleration
D. time
Answer 9:

 

Q10:

 

An object is moving in a straight line. Its velocity v cm/s after t seconds is given by the equation v = 4t - 1. If its distance from a fixed point after 1 second is 3 cm, find its distance after 2 seconds.

Calculate the acceleration after 2 seconds.

A. 6 cm
B. 7 cm 
C. 8 cm
D. 9 cm
Answer 10: