Question 2 Tries remaining: 3 Marked out of 1.00 \\'7 Flag question Match each of the following quantities with the correct combination of SI base units. Unit Quantity m 5'1 \\/ speed work -2 m s momentum force kg m 5-1 density acceleration kg m 3'2 kg m2 3'2 kg m'3 A V Question 3 Tries remaining: 3 Marked out of 1.00 \\V Flag question A battery powered car is moving due east along a horizontal road at a constant speed. According to Newton's laws of motion, mark each of the following statements as true or false. The car wheels exert a force on the road towards the east s The air resistance must be equal to zero : 0 There is no resultant force acting on the car in the direction it is moving 4} The rate of change of momentum of the car is zero The road exerts an upwards force on the car equal to its weight : 4} The acceleration of the car is proportional to its mass Question 4 Tries remaining: 3 Marked out of 1.00 17 Flag question Identify the two statements from the list below that are NOT correct. Select one or more: Stress measures the force per unit area acting on a surface. The gradient of a graph of displacement (yaxis) against time (xaxis) measures acceleration. Power can be calculated from energy multiplied by time. The vectors representing the forces acting on a dynamic system do not add up to zero. Young's modulus is the ratio of stress divided by strain. The kilowatt hour is a unit of energy often used to sell fuel