instruments used to measure the following quantities Mass weight length time and density of a liquid

An automobile of mass 2000 kg moving at 30 m/s is braked suddenly with a constant braking force of 10000 n. how far does the car travel before stopping?

Figure 9 on page 362 shows various motions of balls. the curved path followed by the yellow ball in b in picture b is result of a) inertia b) centripetal motion c) gravity and horizontal velocity d) linear motion

Dao makes a table to identify the variables used in the equations for centripetal acceleration. what quantities belong in cells x and y?