A. The smallest value that can be measured accurately by a given instrument, such as 0.1 mm for a typical vernier caliper
8.
For an object undergoing uniformly accelerated motion in a straight line, which of the following equations correctly relates final velocity (v), initial velocity (u), acceleration (a), and time (t)?
The correct kinematic equation relating displacement (s), initial velocity (u), time (t), and acceleration (a), for uniformly accelerated straight-line motion, is:
The third equation of motion, which relates final velocity (v), initial velocity (u), acceleration (a), and displacement (s) without involving time directly, is given by:
If a ball is thrown vertically upward, the acceleration acting on it throughout its flight (ignoring air resistance), both during ascent and descent, is:
A.
Acceleration due to gravity, acting downward at all times, with magnitude g ≈ 9.8 m/s²
B.
An acceleration that constantly changes direction at the highest point only
C.
Acceleration due to gravity, but only during the descent phase
A. Acceleration due to gravity, acting downward at all times, with magnitude g ≈ 9.8 m/s²
12.
On a velocity-time (v-t) graph for an object undergoing uniformly accelerated motion, the area under the graph (between the curve and the time axis) represents:
A.
The acceleration of the object
B.
The mass of the object
C.
The instantaneous velocity at a single point in time
