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answerhappygod
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Question 1 A stone is thrown horizontally at 15 m/s from a height h above the ground. The stone travels a horizontal distance of 30 m before hitting the ground. Ignore the effect of air friction 1.1 Calculate the numerical value of h. 1.2 Calculate the height of the stone after 1 s. Question 2 The FIGURE I below shows the angular velocity versus time graph of a wheel. w (rev/s) 2 1 0 0 1 2 3 t (s) 4 Figure 1 2.1 Convert 2 rev/s into rad/s. 2.2 Use the graph (without using kinematics equations) to calculate: 2.2.1 The particle's angular position at 4 s. 2.2.2 The particle's angular acceleration at 2 s. (4) (6) [10] (2) (5) (3) [10]
Question 1 A stone is thrown horizontally at 15 m/s from a height h above the ground. The stone travels a horizontal distance of 30 m before hitting the ground. Ignore the effect of air friction 1.1 Calculate the numerical value of h. 1.2 Calculate the height of the stone after 1 s. Question 2 The FIGURE I below shows the angular velocity versus time graph of a wheel. w (rev/s) 2 1 0 0 1 2 3 t (s) 4 Figure 1 2.1 Convert 2 rev/s into rad/s. 2.2 Use the graph (without using kinematics equations) to calculate: 2.2.1 The particle's angular position at 4 s. 2.2.2 The particle's angular acceleration at 2 s. (4) (6) [10] (2) (5) (3) [10]