Mechanics Module 1: Kinematics

What is the term that describes the total length traveled by an object?

Velocity
Displacement
Distance (correct)
Speed

Which of the following is a vector quantity?

Speed
Distance
Position
Velocity (correct)

What is the unit of measurement for speed and velocity?

m/s (correct)
km/h
km/s
m/h

What is the average speed of an object equal to?

Ratio of total length traveled over total time of travel (D) Signup and view all the answers

What is the difference between speed and velocity?

Speed is a scalar quantity while velocity is a vector quantity (B) Signup and view all the answers

What is the instantaneous velocity of an object?

The velocity at a specific point in time (C) Signup and view all the answers

What is the primary focus of Kinematics as a branch of Mechanics?

The motion of objects without considering forces and masses (D) Signup and view all the answers

What is the outcome of studying kinematics, as described in the module?

Competent discussion of motion parameters and their measurement (A) Signup and view all the answers

Which of the following is NOT a learning outcome of this module?

Understand the concept of thermodynamics (C) Signup and view all the answers

What is the relationship between motion and Kinematics?

Motion is a fundamental observable phenomenon, and Kinematics is a branch of Mechanics that focuses on the motion of objects (B) Signup and view all the answers

What is the primary tool used to describe and predict linear motion in Kinematics?

Graphs and vectors (C) Signup and view all the answers

What is the characteristic of motion described in Kinematics?

Uniformly accelerated motion is described in terms of relationships between measurable scalar and vector quantities (C) Signup and view all the answers

What is the condition for static equilibrium?

The net force acting on the object is zero (D) Signup and view all the answers

What is the formula for the magnitude of torque about the axis of rotation?

τ=rFsinθ (A) Signup and view all the answers

What is the purpose of the FBD in the given solution?

To find the frictional force (C) Signup and view all the answers

What is the second condition of static equilibrium?

The net torque acting on the object is zero (B) Signup and view all the answers

What is the coefficient of kinetic friction(µk) between the box and the floor?

25/50 (A) Signup and view all the answers

What is the purpose of using the two conditions of equilibrium?

To determine if the object is in equilibrium (B) Signup and view all the answers

What is the primary function of a resistor in an electronic circuit?

To reduce current flow (D) Signup and view all the answers

What is the unit of measurement for voltage?

Volts (C) Signup and view all the answers

What is the symbol for a voltmeter when used in a circuit?

(B) Signup and view all the answers

What is the direction of current flow indicated by in an electrical circuit?

Polarities (C) Signup and view all the answers

What is the purpose of ε in an electrical circuit?

To rate the electromotive force of a battery (D) Signup and view all the answers

What is the opposition to current flow in an electrical circuit measured in?

Ohms (A) Signup and view all the answers

What is the physical quantity that is directly proportional to the net external force acting on a system, according to Newton's second law of motion?

Acceleration (D) Signup and view all the answers

A 10.0 kg object is accelerating upward at a rate of 0.40 m/s². What is the net external force acting on the object?

40 N (A) Signup and view all the answers

What is the coefficient of friction between the floor and the 60.0 kg box in the second example?

0.29 (A) Signup and view all the answers

What is the sum of all forces along the y-axis, according to the first example?

T - W (C) Signup and view all the answers