The horizontal range of a projectile fired at an angle of \(15^\circ\) is \(50\) m. If it is fired with the same speed at an angle of \(45^\circ\), its range will be:
1. \(60\) m
2. \(71\) m
3. \(100\) m
4. \(141\) m
Two particles are projected in the air with speed \(v_0\), at angles \(\theta_1\) and \(\theta_2\) to the horizontal, respectively. If the height reached by the first particle is greater than that of the second, then:
(a) | the angle of the project: \(\theta_1>\theta_2\) |
(b) | the time of flight: \(T_1>T_2\) |
(c) | the horizontal range: \(R_1>R_2\) |
(d) | the total energy: \(U_1>U_2\) |
Choose the correct option:
1. | (a, c, d) | 2. | (a, c) |
3. | (b, c, d) | 4. | (a, b, c) |