Motion in a Straight Line — Physics STD 11 Science — Question

Fill in the blanks:
A vehicle moving with a speed of 18km h^-1 covers ....m in 1 s

"In the absence of external force, an object cannot automatically change its state of rest or state of linear motion." This statement is said to be from....................Galileo.

Amplitude R = ____________of Resultant wave.

Time-displacement graph is a straight line parallel to the time axis. The values of velocity and acceleration will be ................ .

When distance covered by a moving object in a particular time interval is much greater than size of the object, then object is said to be­ ______.

Physical quantities which are independent and not defined in terms of other are called ______.

SONAR works on the principle of ______.

Time period of a body executing simple harmonic motion _______.

Apparent change in frequency of sound waves when source of sound and listener are in relative motion is known as ______.