##imp10thmaharashtra
- What is escape velocity? The minimum initial velocity needed by an object projected upwards to overcome earth's gravitational force and not fall back on earth is cal... 1
- What is free fall?and how it happens? Whenever an object moves under the influence of the force of gravity alone, it is said to be in Free Fall. During free fall initial velocity... 1
- d. A stone thrown vertically upwards with initial velocity u reaches a height ‘h’ before coming down. Let us consider an object which is projected vertically upwards with initial velocity u which reaches a maximum height h. Acceleration due t... 1
- b What are (i) free fall, (ii) acceleration due to gravity (iii) escape velocity (iv) centripetal force ? (i) Free Fall: Whenever an object moves under the influence of the force of gravity alone, it is said to be in Free Fall. During free fall i... 1