A hot-air balloon is moving vertically upwards at a constant speed. A camers in accidentaly dropped from thn baloon at a theight of 92,4 m as shown in the diagram below The camera strikes the ground after 6s. Ignore the effocts of triction 92.4 m 10 m P. At the instant the camera in dropped, it moves upwards. Give a reason for tthis observation. 3.1 3.2 Calculate the speed v, at which the baloon is rising when the camera dropped. 3.3 Draw a sketch graph of velocity versus time for the entire motion of the camera. Indicate the foltowing on the graph: • Initial velocity • Time at which it reaches the ground if a jogger, 10 m away from point P as shown in the above diagram and running at a constant speed of 2 ms', sees the camera at the same instant it starts falling from the balloon, will he be able to catch the camera before it strikes the ground? Use a calculation

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Applications Of Reflection Of Light

When a light ray (termed as the incident ray) hits a surface and bounces back (forms a reflected ray), the process of reflection of light has taken place.

Sign Convention for Mirrors

A mirror is made of glass that is coated with a metal amalgam on one side due to which the light ray incident on the surface undergoes reflection and not refraction.