PartA. Q1: In one hour, a boat goes 11 km along the stream and 5 km against the stream. The speed of the boat in still water (in km/hr) is: [SSC 2000] Q2: A man can row upstream at 8 kmph and downstream at 13 kmph. The speed of the stream is; Q3: A man rows downstream 32 km and 14 km upstream.
Aperson weighs 180 pounds (81.65kg) and runs at a rate of 5 mph (a task that has a MET value of 8.3) for 1 hour (60 minutes). Calories Burned from running at 5 mph (per minute) = (8.3 x 81.65 x 3.5) ÷ 200 = 11.86. Calories Burned from running at 5 mph (for 60 minutes) = 11.86 x 60 = 712. Calories burned running by weight and timeAman walking at the rate of 5 km/hr crosses a bridge in 15 min. The length of the bridge (in metres) is : a) 600 metres b) 750 metres c) 1000 metres d) 1250 metres Walking $$\frac{3}{4}$$ of his normal speed, Rabi is 16 minutes late in reaching his office. The usual time taken by him to cover the distance between his home and office: A. 48
Thespeed of motorboat is 15 km/hr in still water. The total time to go 30 km downstream and comes back is 4 hours 30 minutes. Formula Used: Downstream = Speed of boat in still water + Speed of stream/current. Upstream = Speed of boat in still water - Speed of stream/current. Calculation: Let the speed of stream be x. The total time is 4 + 30/ Speedis the rate of change in position of an object, regardless of direction of travel. Walk forward or backward at 2 meters per second, and your speed is just that: 2 m/s. Velocity is speed in the context of direction. Say you were walking backward again; your velocity is negative 2 m/s, although your speed is still positive. . 53 35 23 275 78 151 152 380