In physics, a vector is a physical quantity that requires both a magnitude (size or amount) and a direction for its complete description. Quantities that only have magnitude are called scalar quantities.
A vector is a physical quantity which has:
Asked in HAS Prelims 2019 · Topic: Mechanics (Newton's Laws of Motion and their applications)
More Physics questions
- Newton's First law of Motion is also known as :
- Which of the following statements with reference to uniform linear motion and uniform circular motion is/are TRUE? In a uniform linear motion, a body moves in the same direction with a constant speed but in uniform circular motion, the direction of the motion changes continuously. In a uniform linear motion, there is instantaneous change in velocity but in uniform circular motion, the velocity remains the same. A uniform linear motion is an accelerated motion but a uniform circular motion is not an accelerated motion. Choose the correct answer from the options given below:
- A man travels from point A in one state to point B in another state by a train moving at a speed of 90 kmph and he returns to the starting point A by another train moving at a speed of 72 kmph. What was the average speed of the trains for the whole journey?
- Rajender engages Sunil and Vijay to do some construction work in his office. Sunil is highly skilled and is $3\frac{1}{2}$ times as good a workman as Vijay. Therefore, he is able to finish his work in 45 days less than Vijay. In how many days they both working together, can finish the work?
- A train travelling at 25 km/hr. leaves Delhi at 9 a.m. and another train leaves Delhi at 35 km/hr. at 2 p.m. in the same direction. At how many kms from Delhi do they meet ?
- P does a job in 11 days while Q takes 12 days and R takes 22 days for the same job. P and Q started working together. But, after two days they left and R had to complete the job. Find the number of days required to complete the job.
- Rain is falling vertically downwards. To a man running east-wards, the rain will appear to be coming from
- Consider the motion of the tip of the minute hand of a clock. In one hour 1. The displacement is zero 2. The distance covered is zero 3. The average speed is zero 4. The average velocity is zero Select the correct answer using the codes given below :